Außergewöhnliche Trilobiten
Exceptional trilobites
Auf dieser Seite stelle ich einige besondere Trilobiten, Trilobitengruppen und Trilobitenspuren vor - teils aus meiner Sammlung, teils aus anderen Sammlungen. Ich denke, dass diese Abbildungen mit erläuternden Texten nicht nur Trilo-Fans begeistern werden. - Ich beginne mit einer Darstellung des tschechischen Mittelkambriums. Auch wenn die Trilobiten nicht außergewöhnlich sind, ist es doch das Lebensbild, das eine Vorstellung gibt von der damaligen Unterwasserwelt...
On this page I present some special trilobites, trilobite groups and trilobite tracks - partly from my collection, partly from other collections. I think that these illustrations with explanatory texts will not only inspire trilo fans. - I will start with a presentation of the Czech Middle Cambrian. Even if the trilobites are not extraordinary, it is the image of life that gives an idea of the underwater world of that time ...
PARADOXIDES AND ELLIPSOCEPHALUS - HOW THEY LIVED AND "SURVIVED"...
PARADOXIDES UND ELLIPSOCEPHALUS - WIE SIE LEBTEN UND "ÜBERLEBTEN"...
Zdenek Burian created the picture with the trilobites Paradoxides gracilis (the big-ones) and Ellipsocephalus hoffi (right) of the Middle Cambrian, Jince Formation, lower part ot the Hydrocephalus lyelli Zone, Czech Republic. They survived as fossils - below from the left: Paradoxides (12 cm, my collection), Ellipsocephalus (each 2 cm, picture fossilmail.com) and Hydrocephalus minor (2.5 cm, my collection)
Zdenek Burian schuf dieses Bild mit den Trilobiten Paradoxides gracilis (die großen) und Ellipsocephalus hoffi (rechts) aus dem Mittelkambrium, Jince Formation, unterer Teil der Hydrocephalus lyelli-Zone, Tschechische Republik. Sie überlebten als Fossilien - unten von links: Paradoxides (12 cm, meine Sammlung), Ellipsocephalus (je 2 cm, Bild fossilmail.com) und Hydrocephalus minor (2,5 cm, meine Sammlung).
John Cassani posted on facebook: "ONE OF MY FAVORITES, Erbenochile erbeni. Sophisticated vision with calcite schizochroal eyes evolving not long after the first plants appeared on land. Selection for advanced vision and abundant spines to avoid jawed predators in the Devonian. 360 degree vision with lens shades. - Collection location was Timrhanhart Formation, Foum Zhuid, Morocco."
ERBENOCHILE AFF. ERBENI -
A RARE AND AMAZING TRILOBITE!
Trilobites Order Phacopida, Suborder Phacopina, Superfamily Acastoidea, Family Acastidae
Geological Time: Lower Devonian, Upper Emsian
Size: Trilobite is 57 mm long by 41 mm wide on a 125 by 100 mm matrix
Fossil Site: Jebel Oudriss , Morocco
Description: Elegant example of a member of the Order Phacopida, Superfamily Acastoidea with many fine details present. Once known in the trade as “Big Eye”, this one is actually Erbenochile. Most diagnostic features of this taxon are the high “eye-towers”. Fortey and Chatterton described Erbenochile erbeni in September 2003 from a single commercially-prepared specimen, and it created a stampede among collectors. The “wrap around” eyes gave a good panoramic view of the trilobite’s environment, allowing it to keep alert for predator and prey alike. Since fish had recently evolved true jaws, any advantage a prey species could derive would place it at an advantage. This one has been prepared with the genal and axial spines all freestanding, quite an achievement from such hard matrix. Note the exceptional eye facets seen here, a feature that is difficult to prepare well due to the matrix.
Do you ever wonder why 90% of KONEPRUSIA trilobites (Devonian of Issimoure/Morocco) available in the market are destroyed (totaly burned skin, massacred) to almost unrecognizable condition, fake, painted over and more or less heavily restored? If you try to prep one of these you start to undrestand. At over 70 hours of prep, this was a quick work for Koneprusia (although the % of details that could have been preserved in this type of matrix even if 40 hours more were spent is relatively low and would make no sense). In commercial preparation, there's always a choice between the prep quality and the time-costs, but the usual Moroccan way of quick-prep can take much less time to prep as a careful work. All quick preparations result in more or less damage, so price alone does not make a bargain a good deal. Price does not guarantee authenticity either, but you can easily judge the work when prep-progress photos are shared and TDI is one of the few very professional sellers of only the best quality and authentic trilobites, that deserves your trust 100% even without prep photos!
https://www.trilobiti.com/post/prep-story-of-devonian-trilobite-koneprusia-sp-from-issimoure?fbclid=IwAR0hwEu1Y51_DjOCTpPEUGoc6969-PhOwuq8BQifoquKg1WoRxu3XVVpp1A
THESE EYES - WHAT DID THEY SEE? / DIESE AUGEN - WAS HABEN SIE GESEHEN?
Name: Hollardops merocristata
Class Trilobita; Order Phacopida; Family Acastidae
Geological Time: Eifelian/Middle Devonian
Length: ca 6 cm
Fossil Site: Ofaten/Alnif, Morocco
Some of the most elegant trilobites come from the Devonian strata of Morocco. And, in recent years availability of modern pneumatic and air abrasive equipment have enabled fine preparation of trilobites that come from extremely hard limestone, and were formerly and still sometimes prepped, literally, with hammer and nail. This Hollardops merocristata (formerly Metacanthina barrandei) exhibits detailed articulation and inflated three-dimensionality.
A member of trilobite Order Phacopida, this trilobite shares the distinction of schizochroal eyes only with other members of the Order. The pictures show the fine facet preservation in the wonderful yellowish eyes.
Collection: Uwe-M. Troppenz. Prepped and photographed by Mohamed Segaoui. Concerning the yellow eyes he explains: a fluke of fossil preservation, along with some state-of-the-art technology, has now allowed scientists to see inside the trilobite eye. It turns out, bacteria that settled on the trilobite’s remains set down a thin layer of minerals on the surface of the eye, researchers reported.
Trilobite Zlichovaspis rugosa
Ihandar Formation, Lower Devonian (Pragian), Laatchana/Morocco, ca 7.5 cm - Houston Museum of Natural Science.
PaleoJoe - Author, Lecturer, Paleontologist - writes: Here is an example of one of my favorite pieces, Lochovella, formerly Reedops from the Haragan Formation (Devonian) in Oklahoma. Spectacular photo of a really nice 2 inch long trilobite, classic trilobite, classic location. Enjoy this beauty.
Throughout their 270-million-year-long trek through Deep Time, trilobites were in constant peril from an ever-more dangerous cast of predators. By the start of the Devonian Period, some 420 million years ago, they had developed not only a thick calcite shell but also rows of sharp defensive spines, dramatically demonstrated on this 6-inch-long (15.2 centimeters) DROTOPS ARMATUS from Morocco. (American Museum of Natural History)
TRILOBITE FROM THE TIME BEFORE OLENELLIDS...
My friend George Walter Ast writes: A 3 inch (ca. 7,5 cm) Esmeraldina roweii from the Lower Lower Cambrian Poleta Formation of Goldfield Nevada. An amazingly evolved trilobite from this time before Olenellids.
LOWER CAMBRIAN TRILOBITE: MESONACIS EAGERENSIS
Mesonacis eagerensis, Redlichiida trilobite from Eager Formation (Lower Cambrian), British Columbia / Canada.
Reference : https://www.facebook.com/
A VERY RARE TRILOBITE OF THE LOWER CAMBRIAN WITH ESTONISHING DETAILS
Bolbolenellus brevispinus Palmer, 1998
Order Redlichiida, Suborder Olenellina,
Superfamily Olenelloidea,
Family Biceratopsidae
Subfamily Biceratopsinae
1.75 inches (4.45 cm) (the tailspine is a bit
over .75 inches alone and trilobite body a
little over inch (2.7cm for body, 2 cm for spine)
and on side of slab is a Nephrolenellus geniculatus Palmer 1998 Redlichiida, Olenellidae, Bristoliinae, Olenellidae,
with opistothorax preserved.
Lower Cambrian, Series 2, upper Dyeran
Pioche Shale, upper Combined Metals Member
Panaca, Nevada, U.S.A.
(Size: 2.9 cm for body, 2.1 cm for spine.)
David Jien: Trilobite NEVADIA WEEKSI, Esmeralda county, Nevada/USA, Lower Cambrian, 5cm
A RARITY I COULD NOT RESIST: THE LOWER CAMBRIAN TRILOBITE LONGIANDA
I simply couldn't resist the rare Longianda termieri (Hupe, 1953) by Mohamed Segaoui: Lower Cambrian of Morocco, 13 cm long, well preserved and well prepared (little restaurations).
The Issafen Formation of the Anti-Atlas region of Morocco has recently become something of a Gold Rush for the discovery of Issafen Formation heretofore unseen trilobites of Early Cambrian age. This one is no exception. There are several examples of this taxon, but most are either missing the pygidium or it was tucked under and not prepped out. Here even the axial spines on the posterior were carefully brought to light.
THE TRILOBITE WITH THE ORANGE SPINES...
A big Olenoides nevadensis, slightly compressed but a cool relief. Love those orange spines! Middle Cambrian, Utah.
AN UPPER CAMBRIAN TRILOBITE IN AN EXCELLENT PRESERVATION
This excellent trilobite (2,5 cm) belongs to my friend RJ Jacobson. I am very impressed of this preservation degree. He described it:
Spinamacropyge daliensis (Zhu, 2005)
Order Asaphida (Fortey & Chatterton 1988)
Sub Order Asaphina (Salter 1864)
Superfamily Asaphoidea (Burmeister 1843)
Family Ceratopygidae (Linnarson 1869)
Subfamily Iwayaspinidae (Kobayashi 1962)
Furongian Series. Nuchehean Stage
Sandu formation
Upper Cambrian
Guole Section
Village d’Hewen
Jingxi County
Guangxi Province, China
Sam Ohu Gon III showed this splendid trilobite on facebook:
Irvingella flohri (Resser, 1942)
McKay Group, Upper Cambrian (Furongian)
Cranbrook, British Columbia, Canada
image courtesy Dan Bowden
from the collection of Chris New
prepared by Dave Comfort
Irvingella has been considered a member of family Elviniidae in the Order Ptychopariida, but the order has been dismantled more and more over the past several decades, and the lines blurred between the primitive orders Redlichiida, Corynexochida and Ptychopariida.
In this species of Irvingella, the macropleural segment toward the second half of the thorax is prominent, as are the long narrow genal spines from the cephalon. Despite how spiny the thorax is, the pygidium is smoothly curved and entirely unarmed. Quite a few distinctive trilobites have come out of the McKay Group in Canada.
TRILOBITE WITH WHITE SHELL
Markus Martin postet this remarcable trilobite on facebook and wrote:
One of the most beautiful trilobites I've ever found. A ghostly white Eldredgeops rana trilobite with presumed camouflage patterns from the Middle Devonian of New York. This is currently the oldest evidence of camouflage in the fossil record. It's possible these spots may have been melanophores making them an active camouflage component able to alter grayscale colors to further disrupt the trilobites outline to confuse predators. Read our publication here:
https://www.academia.edu/…/Original_spotted_patterns_on_Mid…
WALLY THE DRAMA QUEEN...
Prem Subrahmanyam Sr. worte on facebook, May 18/2018:
Wally agreed to do a brief photo session. He just struck this pose naturally on his own. Don't tell him I said he's such a drama queen.
SPECIES: Walliserops trifurcatus
AGE: Middle Devonian, Eifilian Stage
LOCATION: Foum Zguid, Morocco
FORMATION: Timrhanrhart Formation
9 cm length
Below an artistic reconstruction:
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THIS TRILOBITE HAS TO TELL A REAL DRAMATIC STORY!
David Clark postet on facebook:
This trilobite was attacked and lived to see another day!
This is a Lochovella (Reedops) deckeri from the Devonian Haragan formation of Oklahoma. The left cheek and eye were damaged and had time to heal (rounded edges).
BOLIVIAN TRILOBITES - FROM THE SEA FLOOR TO THE ANDES IN A HEIGHT OF 4000 METERS
BOLIVIANISCHE TRILOBITEN - VOM MEERESBODEN AUF DIE ANDEN IN EINE HÖHE VON 4000 METERN
Meine bolivianischen Trilobiten (hier einige davon) faszinieren mich immer wieder wegen ihrer Geschichte: Einst lebten sie auf dem devonischen Meeresboden, jetzt sind sie in 4000 m Höhe in dem Gebirgszug der Anden zu finden. Zeugen einer sehr bewegten Geologie... - Oben Mitte Eldredgeia venusta (Wolfart, 1968), 6,5 cm lang. Rechts oben Eldredgeia eocryphaea (Carvalho et al. 2003), ca. 5,5 cm, links oben der außergewöhnliche Bouleia dagincourti (Ulrich, 1892), ca. 5,5 cm, und rechts Pennaia verneuili (d'Orbigny, 1842), 4,5 cm, an einer Schnecke Platyceras bistrami (Knod, 1908), Durchmesser ca. 4 cm. Alle aus der Belèn-Formation.
I am always fascinated of my Bolivian trilobites (here some of them) because of her history: oce they lived on the sea floor, now they are to finde in a height of 4000 meters in the Andes. witnesses of a very moved geology... - Middle above Eldredgeia venusta (Wolfart, 1968), 6.5 cm long. Right above Eldredgeia eocryphaea (Carvalho et al. 2003), ca 5.5 cm, left above the exceptional Bouleia dagincourti (Ulrich, 1892), ca 5.5 cm, and to the right Pennaia verneuili (d'Orbigny, 1842), 4.5 cm, at a snail Platyceras bistrami (Knod, 1908), ca 4 cm diameter. All from the Belèn Formation.
DER MEERESBODEN DES KARBONS: TRILOBITEN, SEEIGEL, SEELILIEN...
THE CARBONIFEROUS SEA FLOOR: TRILOBITES, SEA URCHINS, SEA LILIES...
A little part of my Carbon-collection:
1) Trilobites Cummingella belisama, Lower Carboniferous from Antoing/Belgium. The left-one has shell, the one above is an endocast.
2) A complete sea urchin Archaeocidaris illinoisensis, Upper Carboniferous/Mississippian, St. Louis Limestone, Missouri/USA.
3) The calyx of the crinoid Actinocrinus sp., Upper Carboniferous/Mississippian, Burlington Formation, from Lee Co., Iowa/USA (2 cm diameter).
Below: A Cummingella better to see - with Brachiopods... / Unten: Ein Cummingella besser zu sehen - mit Brachiopoden...
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UPPER CARBONIFEROUS TRILOBITE: THE PALADIN FROM VOLGOGRAD
Mikhail Russian Trilobites: Paladin transilis (Weber, 1933) with thin facet. Size: trilobite 38 x 17 mm; the length of the spines is approx. 18 mm; approx. matrix size 120 x 100 x 40 mm. Locality: Zhirnovsk, Volgograd region, Russia. Age: Upper Carboniferous (320 million a year ago).
Ditomopyge scitula (Meek & Worthen, 1865)
Morrowan/Pennsylvanian; Central Texas
The Pennsylvanian (also known as Upper Carboniferous or Late Carboniferous/Oberkarbon) is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period. It lasted from roughly 323.2 million years ago to 298.9 million years ago Ma (million years ago).
From Kirk Metts.
DIE LETZTEN TRILOBITEN...
THE LAST TRILOBITES...
In the end of the Permian (250 millions) happened a big mass extinction. The trilobites - belonging to most popular fossils - died out, too. Here are two of the last little friends of several collectors: a symbolically decomposed Pseudophillipsia artiensis from the early Permian period, found in Krasnoufimsk/Russia with pygidium, pleurae and the cheeks with eyes, added (right above) an enrolled Ditomopyge decurtata, also Lower Permian, from Cowley County, Kansas/USA. Left below you see a tilt over Deltablastus permicus from the early Permian, Amanoeban Province, West Timor (southeast Asia). Size of the matrix: 5.5x4.5 cm.
Am Ende der Perm-Zeit (vor 250 Millionen Jahren) ereignete sich ein Massenaussterben. Die Trilobiten - die zu den populärsten Fossilien gehören - starben ebenfalls aus. Hier sind zwei der letzten kleinen Freunde zahlreicher Sammler: ein symbolisch zerfallener Pseudophillipsia artiensis aus der frühen Perm-Zeit, gefunden in Krasnoufimsk/Russland mit Pygidium, Pleuren und den Wangen mit Augen, hinzugefügt (rechts oben) ein eingerollter Ditomopyge decurtata, ebenfalls Unterperm, aus dem Cowley County, Kansa/USA. Links unten seht ihr einen umgefallenen Deltablastus permicus aus dem frühen Perm, Amanoeban-Provinz, West-Timor (Südostasien). Größe der Matrix: 5,5x4,5 cm.
TRILOBITES OF THE ORDOVICIAN - AN ANIMATED RECONSTRUCTION
Потрясающий арт с русскими трилобитами от Михаила Шеханова - Amazing art with Russian trilobites by Mikhail Shekhanov - Erstaunliche Kunst mit russischen Trilobiten von Mikhail Shekhanov - (Ordovician of the St. Petersburg region).
Mikhail Russian Trilobites posted on facebook this Hoplolichas plautini (Schmidt, 1885).
Size: trilobite size 69 x 45 mm; approx. matrix size 150 x 140 x 50 mm; weight 872 gram.
Locality: Volkhov river, St. Petersburg region, Russia.
Age: Aseri Horizon, Middle Ordovician (465 million year ago).
I ADMIRE THE RUSSIAN HOPLOLICHAS TRILOBITES / ICH BEWUNDERE DIE RUSSISCHEN HOPLOLICHAS-TRILOBITEN
Hoplolichas furcifer (Schmidt, 1885)
Age: Middle Ordovician
Formation: Asery level
Locality: Vilpovitsy quarry, St. Peterburg region, Russia
Trilobite size: 5.8 х 4.3 cm
Collection: Maxim Koshelev
Mikhail Russian Trilobites showed on facebook double Remopleurides elongatus (Schmidt, 1894)
Size: trilobite size 1. about 17 (in straight projection) x 9 mm; 2. about 13 (in straight projection) x 8 mm; approx. matrix size 60 x 60 x 35 mm; weight 63 gram.
Locality: Kingisepp district, St. Petersburg region, Russia.
Age: Kukruse Horizon, Upper Ordovician (465 million year ago).
TRILOBITE WITH TELESCOPE EYES:
ASAPHUS KOWALEWSKII FROM RUSSIA
Locality: Volkhov river, St. Petersburg region, Russia.
Age: Aseri Horizon, Middle Ordovician, zone Asaphus kowalewskii (465 million year ago).
AN EXTRAORDINARY AND ELEGANT TRILOBITE OF ST. PETERSBURG
Lonchodomas rostratus, Upper Ordovician, St. Petersburg region. (Photo and collection: Alexei Molchanov)
A REAL BEAUTY: TRILOBITE PARACERAURUS
WAHRE SCHÖNHEIT: TRILOBIT PARACERAURUS
Ordovician of Russia, St. Petersburg region / Ordovizium von Russland, St. Petersburger Region
(Photo: Mikhail Russian Trilobites)
CYBELELLA CORONATA - "INCREDIBLE CREATURE"
D. Allan Drummond commented in "Trilobites" (facebook): "Incredible creature." I agree.
Cybelella coronata (Schmidt, 1881)
Upper Ordovician
Kukruse stage
Alekseevka quarry
St. Petersburg, Russia
XENASAPHUS - NOT ONE, NOT TWO ... 16 SPECIMENS!
Xenasaphus devexus (Eichwald, 1840)
Middle Ordovician, Upper Llanvirnian
Uhaku Regional Stage
Wolchow River, St. Petersburg, Russia
Largest trilobite 11 cm
(American Musem of National History)
TRILOBITE ASAPHELLUS AND ARTHROPOD TREMAGLASPIS:
Trilobit Asaphellus sp. und ein sehr seltener Arthropode Tremaglaspis, Ordovizium, Fezouata-Formation, Zagora/Marokko.
A trilobite Asaphellus sp. and a very rare arthropod Tremaglaspis, Ordovician, Fezouata formation, Zagora/Morocco.
Größe/size: Asaphellus 7 cm, Tremaglaspis 8 cm.
Owner: Felix Collantes.
EXCELLENT PRESERVATION - EXCELLENT PREP:
TRILOBITE MUCRONASPIS ZAGORAENSIS
Felix Collantes to The Trilobites of Morocco (facebook)
Mucronaspis zagoraensis
Ordovician. Zagora. Morocco.
ANOTHER WONDERFUL PAINTING OF Mikhail Shekhanov:
MANIFOLD LIFE IN THE ORDOVICIAN OCEANS...
NOT FORMALLY DESCRIBED
HARPIDES TRILOBITE / FEZOUATA
Harpides trilobite, Lower Ordovician
Lower Fezouata Formation, Dra Valley, Morocco
Size: Trilobite is 62 mm long
This is a stunning trilobite of genus Harpides that as of 2015 has not been formally described. However, it morphologically closely resembles Harpides grimmi from the Millina formation in the Czech Republic described by the famous paleontologist Joachim Barrande in 1872 as Dictyocephalites grimmi. (http://
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MIDDLE ORDOVICIAN / PORTUGAL: A WONDERFUL SPECIMEN OF EODALMANITINADominique Sicart: Eodalmanitina destombesi (Llandeilo series, Serra, Portugal) with a few transversal compression. Size: 10 cm incl. spine.
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My Declvolithus is an essentially complete, good-sized (3,2 cm) example of the distinctive trinucleid Declivolithus titan (Fortey & Edgcombe, 2017) from the Upper Ordovician of Zagora, Draa Valley, Morocco. This specimen has some sinstral disarticulation at the 4th thoracic somite, and the fringe on the right side remains buried in matrix. The remainder of the fringe has fine pitting preserved. The width of the fringe and the development of prolongations laterally in this genus is a harpetid- like character. Matrix approx. 6.5x5.5x2cm. The sense of the perforated fringe is controversial.
TRACE AND CAUSER: RUSOPHYCUS AND CALYMENE
SPUR UND VERURSACHER: RUSOPHYCUS UND CALYMENE
The pictures show a Rusophycus trace and its causer, the trilobite Calymene sp. Rusophycus is a resting trace. This estonishing piece belongs to Jerry Rush from Cincinnati/USA.
Das Bild zeigt Rusophycus und den Verursacher, den Trilobiten Calymene. Rusophycus ist eine Ruhespur. Dieser erstaunliche Fund gehört Jerry Rush aus Cincinnati/USA.
CRUZIANA DISPAR - SCRABBLING TRACE OF A TRILOBITE - WÜHLSPUR EINES TRILOBITEN
To the interesting trilobite's traces belongs Cruziana dispar, a scrabbling trace ("bilobite"). One can see very well the trilobite's activities. This specimen of my collection has ca 6.5x5 cm and was found in Lugnaas, Västergötland/Sweden. Age: Lower Cambrian, "Mickwitzia sandstone".
Zu den interessanten Trilobiten-Spuren gehört Cruziana dispar, eine Wühlspur ("Bilobit"). Man kann die Aktivitäten des Trilobiten sehr gut erkennen. Dieses Exemplar aus meiner Sammlung ist etwa 6,5x5 cm groß und wurde in Lugnaas, Västergötland/Schweden, gefunden. Alter: Unterkambrium, "Mickwitzia-Sandstein".
TWO TRILOBITE ICHNOFOSSILS ON ONE MATRIX
The picture show the movement of a trilobite on the sea floor some hundred millions of years ago... In this trilobite ichnofossil, the animal approached from the right side, leaving Cruziana across the substrate, then settled into the silty bottom, leaving a Rusophycus. (Image courtesy of Stefano Novello, http://www.trilobites.info/trace.htm).
Das Bild zeigt die Bewegung eines Trilobiten auf dem Meeresboden vor hunderten von Millionen Jahren... Auf dieser Trilobitenspur erkennt man, dass das Tier von rechts herankam und eine Spur namens Cruziana auf dem Substrat hinterließ, sich dann auf dem schlammigen Boden niederließ und die Ruhespur Rusophycus verursachte.
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A RARE BEAUTY: BRISTOLIA / EINE SELTENE SCHÖNHEIT: BRISTOLIA
George Walter Ast: A magnificent Bristolia bristolensis from the Latham Shale, Lower Cambrian of Marble Mountains, California/USA. Measuring 4 inches and pretty as can be. Collected by my friend Wayne Ciluffo. (facebook)
A STUNNING GABRIELLUS KIERORUM / LOWER CAMBRIAN OF CANADA
Marc R. Hänsel on facebook: Here's a stunning Gabriellus kierorum. Just under 6 centimeters, from the Lower Cambrian Rosella Formation of northern British Columbia, Canada.
Ebay 04. Nov. 2017 23:18:30 MEZ
Successful bidding: US $5.100,00 (ca EUR 4.389,93)
Psychopyge praestans
Psychopyge hammerorum
Absence of evidence is not evidence of absence. Not saying it is authentic but that just because it has not been seen before does not rule out that it might be
The collector George Walter Ast writes on facebook to this wonderful trilobite:
Back to trilobite Friday with the spiny beast Selenopeltis buchi buchi from the Cabeco De Peao Formation,
TRILOBITE CORONOCEPHALUS WITHOUT AND WITH CROWN
TRILOBIT CORONOCEPHALUS OHNE UND MIT KRONE
Coronocephalus is a genus of trilobites in the Phacopid family Encrinuridae. These specimens are from the Silurian of China. Here you can see the different preservation: The first-one is "normal", mostly without the "crown" giving the name. The second has a crown but the summits in the mid are missing. And the third is nearly perfect. - The complete name is Coronocephalus jastrowi. Collection: Troppenz
("Me" = Michael Lask on facebook)
A CAMBRIAN TRILOBITE WITH LEGS AND ANTENNAE
Palaeolenus lantenoisi (Mansuy, 1912)
Heilinpu (Qiongzhusi) Formation
Lower Cambrian, Ser. 2, Stage 3
Maotianshan, E. Yunnan Province, S. China
image of Zuang Wenhao
TRILOBITES: REALLY COMPLETE ONLY WITH THEIR SOFT PARTS
https://www.fossilrealm.com/…/pyritized-trilobites-triarthr…
Two of my trilobites Eoredlichia intermedia of the lower Cambrian Chengjiang Biota (ca 520 millions) are a little bit unusual: one (above) still has one of its antennae (right above), the other lay over a brachiopod Diandongia pista with both shells preserved (below). Length: both 4.5 cm.
Trilobite Order Redlichiida, Family Redlichiidae
Geological Time: Early Cambrian, (Stage 4, Series 2), ~510MA
Fossil Site: Guanshan Fauna, Wulongqing Fm., Yunnan China
Redlichia yunnanensis is the largest and the rarest trilobite of the Guanshan Fauna, growing up to 30cm long. The thorax consists of 15 segments with gradually elongated spines, with the 11th from the front bearing a very long backward directed spine on the midline. The genal spines typically extend almost as long as the body. Photo credit: The Cambrian Lobby
Pseudosaukianda lata, Lower Cambrian. Morocco. Sammlung und Foto: Felix Collantes.
Pseudosaukianda lata? HUPE 1953
Order: Redlichiida, Richter, 1932
Suborder: Redlichiina Richter, 1932
Superfamily: Redlichioidea Poulsen, 1927
FAMILY: Saukiandidae Hupé, 1953
Issafen Formation
Antatlasia gutta-pluviae / Sectigena zone
Banian Stage,
(Hupe’ 1953, Longianda-Gigantopygus zone Inf. Zone VI)
Lower Cambrian
Anti Western Atlas
Issafen, Morocco
Myopsolenus sp., Middle Cambrian, Agdzian (Tissafinian), Jbel Ougnate, Anti-Atlas Mountains, Morocco, 16 cm. (American Museum of Natural History)
William Hessin to Central Ontario Palaeontological Society (COPS): "This poor old thing called presently as Isotelus latus from the Upper Ordovician of Ontario."
FURTHER TRILOBITES OF THE ORDOVICIAN VERULAM FORMATION / ONTARIO
Some trilobites of the Ordovician Verulam Formation (above the Bobcaygeon Formation), James Dick Quarry, Lake Simcoe, Ontario/Canada. My friend Douglas McAvoy sent me these photos some years ago for my German booklet "Paradies im Ordoviz - Fossilien der Bobcaygeon/Verulam Formation" (2009). The booklet is out of stock, so I show these nice pictures here. On the left picture we see (from left above) Flexicalymene, Calyptaulax, Ceraurus and Isotelus (all enrolled). - The right picture shows a complete Ceraurus pleurexanthemus.
Erratencrinurus vigilans (Hall, 1847)
Babcaygeon Formation
Ottawa, Ontario, Canada
Upper Ordovician c. 453 Ma
Size: ca 10 mm ; Marc R. Hänsel collection
A GROUP OF PERONOPSIS TRILOBITES
FAMILIENTREFFEN ODER JAHRESVERSAMMLUNG?
EINE GRUPPE VON PERONOPSIS-TRILOBITEN
I like this little group of trilobites in my collection: "big" (nearly 1 cm) and small specimens of Peronopsis interstrictus (White, 1874) in a group of 2.5 cm diameter. They are Middle Cambrian, Wheeler Shale Formation, Antelope Spring, House Range, Utah/USA. Peronopsis was blind, its thorax had only two segments. As Agnostida the Peronopsis trilobites remind me of Agnostus pisiformis (Wahlenberg, 1818) I found in the Alum Shale Formation at Andrarum/Sweden (but Upper Cambrian). - Why they are assembled in the little round formed group? Family reunian, annual meeting of their club? I think it is a colluvium due to a vortex...
Ich mag diese kleine Trilobiten-Gruppe aus meiner Sammlung: "große" (fast 1 cm) und kleine Exemplare von Peronopsis interstrictus (White, 1874) in einer Gruppe von 2,5 cm Durchmesser. Sie sind mittelkambrisch, Wheeler Shale Formation, Antelope Spring, House Range, Utah/USA. Peronopsis war blind, sein Thorax hatte nur zwei Segmente. Als Agnostida erinnern mich die Peronopsis-Trilobiten an Agnostus pisiformis (Wahlenberg, 1818), die ich im Alaun-Schiefer von Andrarum/Schweden gefunden habe (aber Oberkambrium). - Warum sind sie in einer kleinen rund geformten Gruppe versammelt? Ein Familientreffen, eine Jahresversammlung ihres Vereins? Ich denke, es ist eine Zusammenschwemmung auf Grund eines Wasserstrudels.
TWO OTHER WHEELER SHALE TRILOBITES
ZWEI WEITERE WHEELER SHALE-TRILOBITEN
The Wheeler Shale (named by Charles Walcott) is a Middle Cambrian (c. 507 Ma) fossil locality world famous for prolific agnostid and Elrathia kingii trilobite remains (even though many areas are barren of fossils). Here you see such Elrathia kingii (right, 4 cm) and an Asaphiscus wheeleri (5 cm) from my collection. It was not easy to photograph the two little animals crawling about, because they permanent tried to escape... 
Locality: House Range, Millard County, west Utah/USA. By the way: varied soft bodied organisms are locally preserved, a fauna (including Naraoia, Wiwaxia and Hallucigenia) and preservation style (carbonaceous film) normally associated with the more famous Burgess Shale.
Der Wheeler Shale, oft auch als Wheeler-Formation bezeichnet, ist eine Gesteinsformation im US-amerikanischen Bundesstaat Utah. Sie entstand im mittleren Kambrium vor ca. 507 Millionen Jahren und enthält eine Konzentratlagerstätte mit außergewöhnlich gut erhaltenen Fossilien. Weltberühmtheit erlangte der Wheeler Shale durch Funde hervorragend erhaltener Trilobiten, beispielsweise Elrathia kingii (Staatsfossil von Utah!) sowie verschiedener Vertreter der Agnostiden. Auf dem Bild sind Elrathia kingii (rechts, 4 cm) and Asaphiscus wheeleri (5 cm) zu sehen. Es war nicht leicht, die kleinen Krabbler zu fotografieren, weil sie ständig ausreißen wollten... Fundort: House Range, Millard County, West-Utah/USA. Übrigens: Auch Organismen ohne mineralisches Skelett, etwa Naraoia, Wiwaxia und Hallucigenia, sind im Wheeler Shale erhalten. Der Erhaltungsmodus (kohlenstoffreicher, filmartiger Überzug) dieser „Weichkörperfauna“ erinnert an die Konservatlagerstätten des Burgess-Schiefer-Typus.