Show Us Your Fossils Challenge Mode: Ordered By Geologic Time Period!

[fossilsonwheels]

So not quite Early Cretaceous but an early Goblin from the Albian Gault Clay of the UK. Anomotodon principalis is the species. 

[fossilsonwheels]

The Cretaceous fills up so fast in this thread that I figured I’d throw in a couple from my collection. The Northumberland Formation is a fascinating Late Cretaceous formation from Canada. It’s a fauna full of interesting deep sea sharks which is a personal area of interest. Here is a Centroscymnus sp tooth. An extant genera of Squaliformes Shark that includes the deepest living shark on earth. 

[siteseer]

20 hours ago, fossilsonwheels said:

So not quite Early Cretaceous but an early Goblin from the Albian Gault Clay of the UK. Anomotodon principalis is the species. 

 

The Albian is the youngest stage of the Early Cretaceous.  The Cenomanian is the oldest stage of the Late Cretaceous.

 

 

[siteseer]

Anyone with a Paleocene fossil?  I'm out of photos for that but get more this weekend.  Maybe @will stevenson has something.

Edited October 5, 2022 by siteseer

[piranha]

Browniea serrata  –  Paleocene, Fort Union Formation, Montana

 

Manchester, S.R., Hickey, L.J. 2007

Reproductive and Vegetative Organs of Browniea  gen. n. (Nyssaceae) from the Paleocene of North America.

International Journal of Plant Sciences, 168(2):229-249  PDF LINK

 

[siteseer]

Great piece, Scott.

[fossilsonwheels]

A Catshark from the Eocene, Scyliorhinus entomodon from the Nanjemoy Formation. 

[siteseer]

On 7/6/2022 at 10:44 PM, siteseer said:

This specimen is a Didymictis jaw section with the first lower molar (tooth is 18mm high from crown apex to end of root).  Didymictis was an early carnivoran (Order Carnivora) but it lived at a time before there were cats, dogs, bears, and hyenas.  It would have looked like a weasel or mongoose and would've been no bigger than a fox.

 

Didymictis sp.
Early Eocene
Willwood Formation
Big Horn County, Wyoming

 

I noticed I made a mistake in reading the wrong label.  This specimen is actually a Snopa jaw section.  Sinopa was a early hyaenodont.   If a moderator seeing this can fix  that for future view, I would appreciate it.

 

Sinopa sp.

Early Eocene
Willwood Formation
Big Horn County, Wyoming

[siteseer]

4 minutes ago, fossilsonwheels said:

A Catshark from the Eocene, Scyliorhinus entomodon from the Nanjemoy Formation. 

 

Nice specimen.  Nice photo.

[fossilsonwheels]

From the Oligocene, Odontaspus dubia Kujulus Formation Ungoza Kazakhstan. This is  the Oligocene KZ tooth in our collection. Also our only Odontadpis from the Oligocene. 

[siteseer]

Here's an axis vertebra of a whale collected from the Middle Miocene Round Mountain Silt, Sharktooth Hill Bonebed at what was once called the "whale quarry" on Bob Ernst's property.  The axis vertebra is connected to the atlas vertebra which is connected to the skull.  This one is about 2 1/16 inches (57mm) long and just over 2 3/4 inches wide.

 

 

Edited October 5, 2022 by siteseer

[Ludwigia]

The worm snail Thylacodes arenarius from the Pliocene at Castelfiorentino, Toscana, Italy.

 

 

 

[Kasia]

Cave bear skull, Pleistocene, Romania, Cioclovina

 

 

[Wrangellian]

Another piece of Mary Ellen stromatolite... green this time. Same info as the ones above (Paleoproterozoic - Orosirian/Statherian). Photo color is a little off but you get the idea.

Still room for a later Precambrian (e.g. Ediacaran) fossil before we go onto the Cambrian!

 

[Kasia]

Kimberella sp, Ediacaran, Russia

 

[Paleorunner]

Let's continue with this little Isoxis auritius 1.5 centimeters. From the early Cambrian.
Qionzgzhusi Formation - Yunnan - China.

 

[JamieLynn]

Ordovician of Oklahoma .....Echinoderm Oklahomacystis sp.

 

 

[Kasia]

Odontopleura ovata trilobite, Silurian, Poland

[Ludwigia]

Greenops widderensis missing one eye. From the Middle Devonian Givetian Widder Formation at Hungry Hollow, Ontario.

 

[GreatHoatzin]

1 minute ago, Ludwigia said:

Greenops widderensis missing one eye. From the Middle Devonian Givetian Widder Formation at Hungry Hollow, Ontario.

 

That is one of the most beautifully preserved Hungry Hollow trilobites I have ever seen!

[Kasia]

Phillipsia sp trilobites, Carboniferous, Poland

[siteseer]

Moving on to the Permian, here's a vertebra of Archeria, an amphibian living at a time before there were frogs, toads and salamanders.

 

Archeria sp.

Early Permian

Wellington Formation

Clay County, Texas

5/8 inch (just under 17mm) wide 

Edited October 11, 2022 by siteseer

[siteseer]

I'm not sure what these two teeth belong to other than at least one genus of archosaur of some kind.  Both teeth bear serrated edges though they may not be visible on the larger one.  They were identified as phytosaur teeth though I understand phytosaur teeth to have unserrated, fang-like anterior teeth and serrated, spoon-shaped lateral/posterior teeth.  The smaller tooth is just over 9/16 of an inch (15mm) long.  The larger partial tooth is 1 7/16 inches (36mm) long and might have been over twice the size when it was complete.  

 

Archosaur teeth

Late Triassic

Chinle Formation

Santa Fe County, New Mexico

 

Edited October 11, 2022 by siteseer

[piranha]

22 hours ago, Kasia said:

Phillipsia sp trilobites, Carboniferous, Poland

 

Phillipsia has a parallel-sided or anteriorly expanding glabella. Instead, these compare favorably to a genus with a similar name: Phillibole.

 

Phillibole aprathensis appears to be a reasonable match: 

 

 

Osmólska, H. 1968

Contributions to the Lower Carboniferous Cyrtosymbolinae (Trilobita).

Acta Palaeontologica Polonica, 13(1):119-150  PDF LINK

[Ludwigia]

A block with mostly Dactylioceras athleticum and one Harpoceras soloniacense from the so-called Early Toarcian "Dactylioceras Bank" in Franconia Bavaria.