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

[Paleorunner]

From the Miocene a Clypeaster atlas with predation. 15x9 centimeters.
Marmolejo - Jaen - Spain.

 

[FranzBernhard]

That´s a new record, from Miocene to Miocene in about 11 hours!
Franz Bernhard

[Paleorunner]

8 minutes ago, FranzBernhard said:

That´s a new record, from Miocene to Miocene in about 11 hours!
Franz Bernhard

At this rate we finished the 10 rounds in 5 days. 

[siteseer]

To recognize Paleorunner for all his contributions to the forum and this thread, here's a scaphopod from Spain

 

Dentalium sp. (tusk shell)

Pliocene

Huelva, Spain

just under 2 1/4 inches (56mm)

[Paleorunner]

Here a horn of Bos primigenius primigenius, 27ctms. from the North Sea.
ice age

 

 

Edited November 6, 2022 by Paleorunner

[Paleorunner]

5 minutes ago, siteseer said:

To recognize Paleorunner for all his contributions to the forum and this thread, here's a scaphopod from Spain

 

Dentalium sp. (tusk shell)

Pliocene

Huelva, Spain

just under 2 1/4 inches (56mm)

Thank you very much for the detail, and beautiful scaphopod. 

[Paleorunner]

35 minutes ago, siteseer said:

To recognize Paleorunner for all his contributions to the forum and this thread, here's a scaphopod from Spain

 

Dentalium sp. (tusk shell)

Pliocene

Huelva, Spain

just under 2 1/4 inches (56mm)

Dentalium sexangulum striolatisimun

Pl

ESCAFÓPODOS

Filo MOLLUSCA
Clase SCAPHOPODA
Subclase
Orden
Suborden
Superfamilia
Familia DENTALIIDAE

Dentalium sexangulum striolatisimun

 

Edad: Plioceno Inferior
Tamaño (mm): 48; 75
Localidad: Bonares (Huelva)

[Pleuromya]

That was very quick, round 2 is already finished!

There have been 16 contributors so far,

 

 @Paleorunner is in the lead with 6 Points, followed by 

 

@Ludwigia and @Kasia with 3 Points each

 

 @siteseer@Kane and @sixgill pete with 2 points each

 

Up next is the Precambrian! 

 

Edited November 6, 2022 by Pleuromya

[Kasia]

Porpita Liaonanella, Precambrian, Australia 

[PR0GRAM]

47 minutes ago, Kasia said:

Porpita Liaonanella, Precambrian, Australia 

Very nice specimen! I’m curious, have you been able to find any recent papers regarding these? I have heard there’s been debate on if it’s a fossil or I’m fact some kind of mineral structure.

[Kasia]

15 minutes ago, PR0GRAM said:

Very nice specimen! I’m curious, have you been able to find any recent papers regarding these? I have heard there’s been debate on if it’s a fossil or I’m fact some kind of mineral structure.

I wasn't looking for any papers on this, to be honest - I just trusted the seller that it is what he says  

[PR0GRAM]

44 minutes ago, Kasia said:

I wasn't looking for any papers on this, to be honest - I just trusted the seller that it is what he says  

I had a chance to do some digging before work! It looks like they were originally described as “medusoids” in the 1960s. However, reexamination by the Geological Survey of Western Australia has designated them as pseudofossils.

Still a very nice piece, I still need one for my collection too!

 

Source:

https://www.dmp.wa.gov.au/Pseudofossils-1663.aspx

Edited November 6, 2022 by PR0GRAM

[Paleorunner]

From the early Cambrian of Yunnan - China, this Circocosmia jinningensis.

 

Edited November 6, 2022 by Paleorunner

[Kasia]

Hebertella brachiopod, Ordovician, US

[Ludwigia]

Platyceras sp. Early Silurian Rochester Shale Formation from Lockport, NY.

 

[piranha]

 

Astraeospongium sp.   Middle Devonian, Üxheim, Germany

 

[fossilsonwheels]

An unusual Carboniferous Chondrichthyes, Akmonistion zangreli from Manse Burn Bearsden Scotland

[fossilsonwheels]

From the Permian, a Barbclabornia tooth from Geary Co Kansas. Funston Limestone is the formation I believe. 

[FranzBernhard]

6 minutes ago, fossilsonwheels said:

An unusual Carboniferous Chondrichthyes, Akmonistion zangreli from Manse Burn Bearsden Scotland

Strange! What part does this specimen represent?

There seems to be a small typo in the second part of the name.

Franz Bernhard

[Kasia]

Pteroniscus cicatrosus fish, Triassic, Madagascar

[fossilsonwheels]

7 minutes ago, FranzBernhard said:

Strange! What part does this specimen represent?

There seems to be a small typo in the second part of the name.

Franz Bernhard

I was told tooth but after looking at the publication and a long look under the microscope, I think it’s more accurate to say denticle. They had strange denticles around their mouth, I believe they are called buccopharyngeal denticles ( I probably butchered that lol). 

[Paleorunner]

A Jurassic cockroach. Ningcheng formation.
Inner Mongolia.

 

[FranzBernhard]

Some years ago, I asked here, what these could be:

Serpulid - Upper Creataceous - Styria, Austria - Fossil ID - The Fossil Forum

I had contact with a serpulid expert, we did not come to a conclusion. A few months ago, I got it! Its

Distefanella radoicicae Pejovic, 1979.

A radiolitid rudist! Small, without ligamentary pillar and with lamellar lower valve instead of the usual cellular valve. Here is a new specimen, collected in May, polished yesterday:

These small rudists are usually not very well preserved in the St. Bartholomä rocks, but locally abundant like in the specimen above (its an individual clast of the "Knödelbrekzie", not a specimen from a coherent bed.). It might be the most abundant rudist in the St. Bartholomä-Formation. That one to the right is ok. It may show somewhat the position of the myocardinal apparatus (the sparry calcite in the top center). The small ribs at about 6:30 may represent one of the radial bands.

Franz Bernhard

Edited November 6, 2022 by FranzBernhard

[fossilsonwheels]

I don’t know if we’re stuck on the Paleocene again or if people are just busy but from the Late Paleocene of Morocco, an Odontopteryx bone. I think femur but I could be wrong. 

[Paleorunner]

High Knightia. Eocene. Wyoming. USA