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

[Ludwigia]

Placunopsis plana from the Middle Triassic Muschelkalk Formation at Heldrungen, Saxony-Anhalt, Germany.

 

[Ludwigia]

A large Pseudhimalayites uhlandi along with a smaller Garnierisphinctes sp. and still smaller Streblites tenuilobatus and Coryceras dentatum ammonites from the Late Jurasssic Early Kimmeridgian divisum zone at a site near Beuron in the Upper Danube Valley in southern Germany.

 

[Pleuromya]

I believe this is Pleuromya costata. From the Early Jurassic Dyrham formation of Northamptonshire.

[Paleorunner]

A Phylloceras sp. from the Albian Cretaceous of Madagascar.

 

 

[Top Trilo]

Family Lauraceae, Late Cretaceous, Arapahoe County, Colorado

 

[siteseer]

Crocodile tooth with root

Early-Mid Paleocene (roughly 61-65 million years old)

Nacimiento Formation

San Juan County, New Mexico

11/16 of an inch (just under 19mm) long

[Pleuromya]

Parasitic wasp in Eocene Baltic Amber.

[Pleuromya]

A tiny vertebrae from the snake Geringophis. Late Oligocene from Brooksville, Hernando County, Florida. 

[Pleuromya]

On 8/17/2022 at 8:51 PM, siteseer said:

That's weird.  When I first posted the Myliobatis tooth plate, it showed right after Kasia's fish.  I went back in to edit the post to provide some background.  Now, Pleuromya's post looks like it was posted before me.  Does the edit change the time shown in the post even if it was first submitted earlier?  Anyway, I would delete my post or change it but it has already been commented on.

 

One other note:  If that Negaprion tooth is from the Yorktown, it is Early Pliocene age.  However, the genus is also known from the Pungo River Formation which is also exposed at the Lee Creek Mine and is Middle Miocene age so it could be Miocene because the fossils are mixed together in the piles.  Some Pleistocene stuff is found in the mine as well.    

Sorry I completely missed the second part of your post here. Thanks for the information. 

[Ludwigia]

Hemipristis serra upper lateral tooth from the Miocene Burdigalian near the Lake of Constance, Germany.

 

[Pleuromya]

I think this is a Pliocene Neptunea contraria. From the Red Crag formation of Ramsholt. 

 

Edited September 14, 2022 by Pleuromya

[siteseer]

Lontra canadensis

jaw section of North American River Otter with fragmentary canine and partial p1-p3 with complete p4 

Pleistocene

Silver River, Florida

just under 2 1/8 inches (57mm) long

[siteseer]

On 9/13/2022 at 1:56 PM, Ludwigia said:

A large Pseudhimalayites uhlandi along with a smaller Garnierisphinctes sp. and still smaller Streblites tenuilobatus and Coryceras dentatum ammonites from the Late Jurasssic Early Kimmeridgian divisum zone at a site near Beuron in the Upper Danube Valley in southern Germany.

 

 

 

Great association piece!

[siteseer]

On 9/13/2022 at 3:04 PM, Paleorunner said:

A Phylloceras sp. from the Albian Cretaceous of Madagascar.

 

 

 

 

That's a beauty!

[siteseer]

14 hours ago, Pleuromya said:

A tiny vertebrae from the snake Geringophis. Late Oligocene from Brooksville, Hernando County, Florida. 

 

That's an interesting shape for a snake vertebra.  I've never seen that one before.

[Pleuromya]

15 hours ago, siteseer said:

 

That's an interesting shape for a snake vertebra.  I've never seen that one before.

I will try and get a few extra photos of it from other sides. 

[Pleuromya]

For the Holocene, a fragment of Aepyornis maximus eggshell from Madagascar. 

[Pleuromya]

For the Palaeoproterozoic, a 2.4 billion year old piece of Banded Iron Formation, from the Krivoy Rog Supergroup of Ukraine. 

[Pleuromya]

A small piece of Zebra Stone from the late Precambrian Ranford Formation of East Kimberly, Western Australia. 

[Paleorunner]

A sponge from the Early Cambrian of Yunnan - China: Crumillospongia biporosa.

 

Edited September 16, 2022 by Paleorunner

[piranha]

2 hours ago, Paleorunner said:

A sponge from the Early Cambrian of Yunnan - China: Morania frondosa

 

The name 'Morania frondosa' has been incorrectly retained from Walcott 1919 for an alleged algae type from the Burgess Shale.

 

The updated taxonomy for this Guanshan / Chengjiang sponge is: Crumillospongia biporosa.

 

 

Zhao, J., Li, Y., Selden, P.A., Cong, P. 2020
New Occurrence of the Guanshan Lagerstätte (Cambrian Series 2, Stage 4)

in the Kunming Area, Yunnan, Southwest China, with Records of New Taxa.
Alcheringa, 44(3):343-355  PDF LINK

 

Walcott, C.D. 1919
Cambrian Geology and Paleontology IV.
Middle Cambrian Algae.
Smithsonian Miscellaneous Collections 67(5):217-260  PDF LINK

 

 

"Up to now, only three species have been recovered, namely Crumillospongia biporosa, Choia sp.,

and Leptomitella sp., of which the first two species are very rare and the latter is moderately common."

 

Hu, S., Zhu, M., Luo, H., Steiner, M., Zhao, F., Li, G., Liu, Q., Zhang, Z. 2013

The Guanshan Biota. Yunnan Science and Technology Press, 204 pp.

[Pleuromya]

This is from the jawless fish Astraspis desideratus from the Ordovician Harding Sandstone, Canon City Colorado. 

[Ludwigia]

Halysites sp. from the Silurian Whirlpool Formation at Credit Forks, Ontario.

 

 

[FranzBernhard]

11 hours ago, Pleuromya said:

Zebra Stone

Just being curios about this pretty stone: Whats the fossil part of it?

Thank you!

Franz Bernhard

[Mochaccino]

A Devonian trilobite, Hollardops mesocristata from the Tazoulait Formation, Atlas Mountains of Morocco, Northwest Africa.

Edited September 16, 2022 by Mochaccino