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 Unterkambriums. Auch wenn die Trilobiten nicht außergewöhnlich sind, ist es doch das Lebensbild, das eine Vorstellung gibt von der damaligen Unterwasserwelt...

               

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.

(www.fossilmall.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.)

THE TRILOBITE WITH THE ORANGE SPINES...

Markus Martin postet on fb (June 2018):

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

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…

 
TRILOBITE Kolihapeltis sp.. Early Devonian (c. 400 million years old), Morocco. Kolihapeltis is a genus of trilobite that lived from the Early Devonian to the Middle Devonian. Its remains have been found in Africa and Europe. This is a specimen from the Melbourne Museum. (Creative Commons).
 

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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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.

 

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).

TRILOBITE AND ITS TRACE: In my collection I have some traces of trilobites of different ages. This here is a "Cruziana" (3,5 cm) from Bright Angel Shale of Clark County, Nevada/USA, lower Cambrian. The trace was made (so I was informed by the finder) by the trilobite Biceratops nevadensis (left, Western Trilobites Association).
Name: Biceratops nevadensis (Pack & Gayle, 1971),
Order: Redlichiida, Suborder Olenellina,
Superfamily Olenelloidea, Family Olenellidae
Locality: Las Vegas, Clark Co., Nevada
Stratigraphy: Bright Angel Shale (like the trace - it is on a "silver" matrix, I don't know more about the material).
The trace gives me the following thoughts: I looks as if it interrupted ahead (above) and the trilobite was pushed and drifted - perhaps of a current - to the right side, only touching the sea flore lightly...
 
 
 
TRILOBITE AND ITS TRACE: Two pictures showing a trilobite and (perhaps) its traces: The trilobite is Paradoxides (my collection, below) from Bohemia/Czech Republik, the trace is called Dimorphichnus juchemi (Zessin 2009 = Wolfgang Zessin) and my friend David Schmälzle (his collection) found it as glacial erratic boulder in Brandenburg/Germany. One says that Paradoxides made the walking trace Dimorphichnus, because one found in the "geschiebes" of this type parts of this trilobite and these traces. David Schmälzle shows his rare collection of Cambrian traces in the book "Wohin die Spuren führen" (Troppenz/Schmälzle 2015, German language, but brilliant pictures).
                                                                         
 
 
Ton Agterbos (Belgium) published this photo of a matrix with trilobite traces on facebook ("The Cambrian Period"). Someone wrote that is looks like a "battlefield" of trilobites... Ton wrote me: "The fossils come from Sweden, Kinnekule area, undercambrian Micwitz sandstone." The causers are unknown. But perhaps it is Holmia kjerulfi (Redlichiida) - below:
 
                                             
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Abdulrahman Bamerni sent me this picture and wrote: "These big size RUSOPHYCUS are from Cambro-Ordovician of Kurdistan."
Es sind Ruhespuren von Trilobiten oder anderen Arthropoden. Diese hier sind besonders groß, und die Anzahl verwundert - ein gemeinsamer Ruheplatz großer Individuen?
 
 

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".

 
 
UNBELIEVABLE RECONSTRUCTION of a lower Cambrian trilobite from Sirius Passet. This is a Cambrian Lagerstätte in Greenland. The Sirius Passet Lagerstätte was named after the Sirius sledge patrol that operates in North Greenland. It comprises six places on the east shore of J.P. Koch Fjord in the far north of Greenland. It was discovered in 1984 by A. Higgins of the Geological Survey of Greenland. - Picture credit: trilobite from Sirius Passet on www.10tons.dk. This trilobite is named Buenellus higginsi, similiar to Olenellus thompsoni (picture below).
 
 
 
 

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SO MUCH CAN COST A TRILOBITE SPECTACULAR RARE *** BOEDASPIS ENSIFER FOSSIL TRILOBITE *** RUSSIA MEGALODON BUG, Ordovician.
Ebay 04. Nov. 2017 23:18:30 MEZ
Successful bidding: US $5.100,00 (ca EUR 4.389,93)
 

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

 
This Triarthrus, a genus of upper Ordovician ptychopariid trilobite, found near New York, still has his legs and antennae!
Found by Markus Martin upstate NY, photo: Peter Lee.
 

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.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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My ACADOPARADOXIDES NOBILIS has 22 cm and it comes from Djebel Ougrat, Morocco. I like this impressive photo made by Regina Troppenz.
 
 

Pseudosaukianda lata, Lower Cambrian. Morocco. Sammlung und Foto: Felix Collantes.
 
 
Myopsolenus sp., Middle Cambrian, Agdzian (Tissafinian), Jbel Ougnate, Anti-Atlas Mountains, Morocco, 16 cm. (American Museum of Natural History)
 
amnh.org
 
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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 picture we see (from left above) Flexicalymene, Calyptaulax, Ceraurus and Isotelus (all enrolled).

 
 
AN UNUSUAL TRILOBITE of the Bobcaygeon Formation in Ontario/Canada: Xylabion sp., middle Ordovician. It was found in the Carden Quarry near Brechin, Lake Simcoe (Simcoe group). But since some years this quarry is closed for private  diggers.                

 

FAMILY REUNION OR ANNUAL MEETING?
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.