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

[hemipristis]

4 hours ago, Al Dente said:

I’m guessing this one is actually Oleneothyris harlani. It lacks the plications of Choristothyris (formerly Terebratella) plicata.

I think you're correct.I didn't have a label for it, and did a quick web search, and theTerrabratells was the only one that I saw mentioned.  However, Oleneothyris harlan rings a bell. thanks

[Wrangellian]

On 1/1/2023 at 6:56 AM, JamieLynn said:

This has been such a great thread, even though I seem to perpetually check in at Cambrian, Silurian and Paleocene - the three ages in which I have no more fossils to contribute! 

...

I have that same problem, but add Triassic to that, and now Oligocene.. I could add a pic of my other gastropod chunk from Sooke, very similar to the first.... 

Edited January 3, 2023 by Wrangellian

[fifbrindacier]

 

Well i've just discovered that fantastic thread, so, here is m'y contribution in it.

While prospecting in the vineyards in the north of the Gironde department i found lutetian urchins.

Sismondia occitana from Saint-Estephe :

Edited January 4, 2023 by fifbrindacier

[Ludwigia]

Another somewhat discombobutated fishy from the Oligocene Rupelian at Céreste, Provence, France. The Dapalis cf. macrurus is 6.5cm. long. Obtained on a trade a few years ago.

 

[fifbrindacier]

Here are Melongenae lainei from the Aquitanian of Saint-Avit, Landes.

I went there with Caterpillar.

[JamieLynn]

Pliocene of North Carolina 

Dolphin Tooth

 

 

 

[Ludwigia]

Heliophora obiculus echinoids from the Early Pleistocene on Mauritius. Picked up for a song on our favorite online auction house. The largest has a ø of 2.5cm.

 

 

 

[Missourian]

Precambrian placeholder...

 

Rhyolite

Proterozoic

Near Belgrade, Missouri, USA

 

 

Some geologic context...

 

The rhyolite was found at the red X, which nearly covers a small 'knob' of Precambrian (dark pink) on the map:

 

 

Precambrian basement rocks (with red X again). This area was basically a volcanic caldera complex back in the day:

 

[fifbrindacier]

Leqnchlilia illecebrosa, lower Cambrian of China.

 

Edited January 7, 2023 by fifbrindacier

[DarasFossils]

Symphysurus Trilobites with preserved antennae

Lower Ordovician

Morocco from the lovely Fezouata Formation

Glad I can post one of my favorite pieces!

Edited January 5, 2023 by DarasFossils

[Ludwigia]

A 16x10cm. plate with several Leptaena rugosa brachiopod shells and one Strophomena sp. on the right from Cataract at the Forks of the Credit River in Caledon, Ontario. Early Silurian Llandoveryian Whirlpool Formation. I used to live close by many years ago, but didn't realize that fossils could be found there until decades later when I was there again on a visit from Germany after I started in on my hobby.

 

[JamieLynn]

Devonian of Oklahoma

Trilobite Kainops sp.   Size 3/4 inch

 

my first enrolled trilobite I ever found.

 

 

[Missourian]

Liroceras ?milleri

Winterset Limestone, Kasimovian/Missourian Stage, Pennsylvanian, Carboniferous

Kansas City, Missouri, USA

 

The living chamber is complete on this one.

 

 

[Wrangellian]

Nice one.

Now we're stuck at the Permian again (unless someone has something from the Gzhelian/Virgilian for the meantime)...

Edited January 6, 2023 by Wrangellian

[DarasFossils]

1 hour ago, Wrangellian said:

Nice one.

Now we're stuck at the Permian again (unless someone has something from the Gzhelian/Virgilian for the meantime)...

I have quite a few Permian bones at my house, but I am on vacation. I'll try to keep up with this period once I get back!

[Pleuromya]

This is a lower Permian Eryops megacephalus skull plate fragment. It's from the Red Beds of Baylor County, Texas and measures about 2cm across. 

 

Edited January 6, 2023 by Pleuromya

[GreatHoatzin]

Here is a polished slice of an Araucaria sp. of tree from the early Triassic (~220 mya), from Madagascar. 

 

It’s not the most interesting by any means, but I’d like to get the thread moving again.

[DarasFossils]

Jurassic Coprolite (got an ID from a Paleontologist yesterday!!!) Likely from a predatory Reptile or Fish.

Solnhofen Limestone, Germany

[hemipristis]

Micros from the Chesapeake-Delaware Canal, Campanian (Late Cretaceous) Mount Laurel Formation, New Castle County, Delaware, USA.:

 

Micrabacia hilgardi, tiny solitary corals, and Boletechinus sp, echinoids.  
 

The largest of both are about 3mm. Belly crawling across the spoil piles is the only way to find these little gems.

Edited January 8, 2023 by hemipristis

[hemipristis]

And a few more from the C&D Canal:

 

Terebratulina cooperi (right), also from the Mount Laurel. About 7mm in max dimension. 

 

The other brachiopod I cannot find an ID for.  It is approx 8-9 mm in max dimension. I’ve include photos of either side in hopes that it tickles somebody’s synapses.

 

 

Edited January 8, 2023 by hemipristis

[Al Dente]

2 hours ago, hemipristis said:

The other brachiopod I cannot find an ID for.

Choristothyris plicata.

[historianmichael]

It is an index fossil of the Navesink so it is not from the Mt Laurel of the C&D Canal

Edited January 8, 2023 by historianmichael

[JamieLynn]

since Cretaceous is so hard to catch, I'm posting an Early Cretaceous piece slightly out of order since Late Cretaceous has already been posted. 

Texas 

Echiniod Pygopyrina hancockensis   Size 1/2 inch

 

[Missourian]

7 hours ago, JamieLynn said:

since Cretaceous is so hard to catch, I'm posting an Early Cretaceous piece slightly out of order since Late Cretaceous has already been posted.

 

Thrust faults happen.

[rocket]

18 hours ago, DarasFossils said:

Jurassic Coprolite (got an ID from a Paleontologist yesterday!!!) Likely from a predatory Reptile or Fish.

Solnhofen Limestone, Germany

 

interesting, not many of this type known and there is always a discussion about it... Does it have fine structure?