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

[Notidanodon]

How about a diplocynodon alligator jaw I found last summer from the Oligocene Hampstead beds at Yarmouth 

[Notidanodon]

An a heterodontus caenezoicus from the miocene of Tasmania 

[siteseer]

A great white shark tooth from the Early Pliocene of Oceanside, California.

[siteseer]

13 hours ago, FranzBernhard said:

Something Oligocene out there ?

Many thanks!
Franz Bernhard

 

The Paleocene and Oligocene are the most challenging times to have a fossil from.  They are both only about 10 million years long so there are fewer exposures worldwide.  The funny thing is that I noticed that a long time ago and I actually tried to find more fossils from those times.  I'll try to be ready when "the spinner" stops there again but I need to take more pictures. 

[Notidanodon]

9 minutes ago, siteseer said:

 

The Paleocene and Oligocene are the most challenging times to have a fossil from.  They are both only about 10 million years long so there are fewer exposures worldwide.  The funny thing is that I noticed that a long time ago and I actually tried to find more fossils from those times.  I'll try to be ready when "the spinner" stops there again but I need to take more pictures. 

I have also lined up a few paleocene and Oligocene fossils to help things move along  yeah it is very noticeable the only site I know of in the uk that is paleocene is herne bay, and potentially abbey wood but that is borderline

i don’t think we have any Oligocene other than the Isle of Wight , that is most common in france I would say in Europe? Anyone got any input

[Paleorunner]

Now turn to the Pleistocene.

 

 

[Paleorunner]

We'll put it in order. 

 

 

Edited June 9, 2022 by Paleorunner

[Yoda]

Another pre-Cambrian. 
Mary Ellen Jasper - Stromatolite 

 

 

[Paleorunner]

Guangweicaris Spinatus. Lower Cambrian.
  Wulongqing Formation - Yunnan - China.
(There are two pieces that I am holding). 

 

[Misha]

Here are some Ordovician microfossils, these are conodont elements and fish fossils from the Harding Sandstone in Colorado

[Peat Burns]

Scolecodont (3 mm in length) from the middle Silurian Schoolcraft Formation. 

 

[fossilsonwheels]

More Devonian Shark stuff. These are Omalodus teeth from the Genundewa Limestone of New York

[MeargleSchmeargl]

I'll go ahead and throw in a Carboniferous (Pennsylvanian Pottsville fm.) Neuropteris frond from Durham, GA.

 

[Yoda]

Permain 

Glossopteris

Dunedoo,NSW, Australia

 

 

[Missourian]

Brittle star

Dinwoody Formation, Triassic

Block Mountain, Montana, USA

 

[Ludwigia]

A socalled "Belemnite Battlefield" from the Early Jurassic Late Toarcian at the clay pit in Mistelgau, Bavaria. Various species of the genera Dactylioteuthis and Acrocoelites.

 

[FranzBernhard]

1 hour ago, Ludwigia said:

"Belemnite Battlefield"

Classic Jurassic .

 

Very simple naturally weathered transverse section, apical view, of a hippuritid rudist from "the formations without fossils"...

Franz Bernhard

[Yoda]

One of the few shark teeth in my collection 

 

 

[siteseer]

Here are a couple of shots of a Coryphodon upper molar from the Early Eocene of Wyoming.  This was a time when Wyoming and a huge expanse of western North America was covered by tropical forest.  Coryphodon is a mammal genus that belonged to the Family Coryphodontidae and the Order Pantodonta, a group of stocky, herbivores that started small (cat-sized) in the early Paleocene but reached larger size by the Early Eocene.  An adult Coryphodon was about the size of a cow - big enough to be the largest land mammal in the world of its time. 

 

Coryphodontids spread from Asia into Europe and North America at the beginning of the Eocene.  They died out during the middle Eocene in  North America but the last of them (and the last of the pantodonts) survived in Asia until the late Eocene.  They have no modern relatives.

 

The first photo is a view looking down at the biting surface.  The second is a side view.  The crown is about 1 1/2 inches along its greatest dimension (top to bottom in the first photo) and about 1 3/8 inches high from the top edge of the crown to the ends of the roots.

[siteseer]

And here's a Carcharocles angustidens tooth from the Late Oligocene Chandler Bridge Formation, Summerville, Dorchester County, South Carolina.

[siteseer]

And then an Alligator tooth (yes, Alligator is a genus) with a good portion of its root from the Late Miocene Bone Valley Formation - a phosphate mine find, Polk County, Florida.

Edited June 12, 2022 by siteseer
additional detail

[siteseer]

A seal canine from the Early Pliocene Yorktown Formation, Lee Creek Mine, near Aurora, Beaufort County, North Carolina.

[siteseer]

A Canis dirus (dire wolf) jaw section from the Late Pleistocene tar seeps of McKittrick, Kern County, California.

[FranzBernhard]

Very nice fossils, thanks for sharing!

And back again to the Precambrian .

Franz Bernhard

[Yoda]

Another piece of Mary Ellen Jasper

This time a grey one