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

[piranha]

The name 'Paedeumias' has been abandoned.

 

 

"Retaining the genus or subgenus name Paedeumias would necessitate either making Olenellus paraphyletic, establishing a new paraphyletic genus, or creating two new monotypic genera. Instead, it makes more sense to drop Paedeumias, a name devoid of significance as a phylogenetic unit, and assign all taxa within the Olenellinae to the genus Olenellus."

 

Lieberman, B.S. 1999. Systematic Revision of the Olenelloidea (Trilobita, Cambrian). Peabody Museum of Natural History, Yale University Bulletin, 45:1-150  PDF LINK

[ziggycardon]

Gosh I love topics like these!
Here is my contribution for the Ordovician. 

 

Climacograptus sp. found in Fauquez, Belgium (Katian, 445 mya)

[Peat Burns]

Thalassocystis striata (green, non-calcareous macroalga) from the middle Silurian Schoolcraft Fm., Michigan.

 

[Kane]

Giant tabulate coral, lower Devonian, Bois Blanc Fm

 

[Nimravis]

Here is a beautiful Mississippian bryozoan hash plate from the Menard formation at a roadcut in Vienna, Illinois.

 

[Nimravis]

Here is something that you will probably never see. Pennsylvanian Dromopus tetrapod trackways from the Benwwod Limestone, Monogahela Formation, Morgan County, Ohio. I received two large slabs of these tracks from my fossil mentor, Walter. An article was published in Earth Science Magazine (1971) on the trackways. They were discovered by my mentors friend, Dick Patterson, who I also met.

 

 

 

 

 

 

 

 

Edited June 20 by Nimravis

[Nimravis]

I know posting Permian stuff might be a little difficult, so I will put up some.

 

Batrachichnus tracks with a tail drag. These are from the ABO Formation, New Mexico. I sent a picture of these prints to Dr. Spencer Lucas ( New Mexico museum of natural history ) and he confirmed the ID.

 

 

 

 

Here are a couple large plates of Laoporus trackways from the Permian Coconino Sandstone of Arizona.

 

 

 

 

[Ludwigia]

From the Late Triassic Norian at the classic site on the Feuerkogel in the Austrian Alps: Cladiscites crassestriatus

 

[Ludwigia]

And while I'm at it, I could add this group of ammonites from the Wutach valley in southern Germany from the Middle Jurassic Aalenian. On the left is a Ludwigia haugi missing part of the outer whorl and the rest are varieties of Ancolioceras opalinoides.

 

[FranzBernhard]

Gosau stuff, what else :

Not easy to get such a rather uncrushed specimen, usually, they look like this:

Note: These specimens are not from the natural monument in Pitzengraben, but from an outcrop about 500 m away:

Haspelgraben (link to a pdf on my homepage, ca. 4 MB, in German)

Franz Bernhard

Edited June 21 by FranzBernhard

[pachy-pleuro-whatnot-odon]

2 hours ago, Ludwigia said:

From the Late Triassic Norian at the classic site on the Feuerkogel in the Austrian Alps: Cladiscites crassestriatus

 

 

Very unusual certatitid! Don't think I've seen any ammonoid with ornamentation/striations that follow the spiral of the shell itself before. Very cool!

[Ludwigia]

1 hour ago, pachy-pleuro-whatnot-odon said:

 

Very unusual certatitid! Don't think I've seen any ammonoid with ornamentation/striations that follow the spiral of the shell itself before. Very cool!

This is a trait which can be relatively commonly found in Triassic ammonites. Some nautiloids have this structure as well.

[ziggycardon]

A Plesiadapis tricuspidens tooth found in Cernay-Les-Reims in France (Paleocene, Thanetian, 58 - 56 mya)

One of the oldest known primate-like mammals.

[Crusty_Crab]

I sure do love the Eocene. I believe this is Corizus guttatus Scudder, 1878 from the Green River Formation of Colorado:

 

 

I've always been amused by this specimen as it looks like it has a clown hat. 

[siteseer]

A Notorynchus tooth (just over 5/8 inches, or 17mm, across) from the early Oligocene Ashley Formation.  It was collected in a creek off the Edisto River, South Carolina.  Notorynchus is a genus of sevengill shark.

Edited June 21 by siteseer
additional thought

[Crusty_Crab]

On 6/20/2022 at 3:41 PM, Nimravis said:

I know posting Permian stuff might be a little difficult, so I will put up some.

 

Batrachichnus tracks with a tail drag. These are from the ABO Formation, New Mexico. I sent a picture of these prints to Dr. Spencer Lucas ( New Mexico museum of natural history ) and he confirmed the ID.

 

 

 

 

Here are a couple large plates of Laoporus trackways from the Permian Coconino Sandstone of Arizona.

 

 

 

 

Absolutely stunning. When you consider how transient tracks are (all it takes is a wave, wind, rain or sandstorm to obliviate them), the fact that they have been so perfectly preserved from an animal during the Age of Amphibians is just miraculous. 

[Nimravis]

45 minutes ago, Crusty_Crab said:

Absolutely stunning. When you consider how transient tracks are (all it takes is a wave, wind, rain or sandstorm to obliviate them), the fact that they have been so perfectly preserved from an animal during the Age of Amphibians is just miraculous. 

My sentiments exactly.

 

[ziggycardon]

Gomphotherium angustidens molar found in Serbia from the Miocene (around 10 mya)

[siteseer]

On 6/21/2022 at 11:03 AM, ziggycardon said:

A Plesiadapis tricuspidens tooth found in Cernay-Les-Reims in France (Paleocene, Thanetian, 58 - 56 mya)

One of the oldest known primate-like mammals.

 

Hi Ziggycardon,

 

Is it possible for you to take another photo of this tooth?  That looks like a view of it from an angle as it sits up.  It would be interesting to see a side view.  I have at least two Plesiadapis teeth from the same locality (a complete incisor and lower premolar).  Your tooth looks different.  I have a couple of teeth of other mammals and will try to get clear photos of those.

 

The teeth I have were given to me by a friend who received them as part of a trade with a French collector back in the 1960's.  They were mostly trading fossil shells, but because he knew my friend had an interest in vertebrates, he gave them to him.  I'm not sure if the teeth are found in the same layer as the shells.

 

Jess

 

[Peat Burns]

Plio-Pleistocene Sconsia hodgii from Sarasota Co., FL, USA, showing color pattern via UV radiation (right)

[ziggycardon]

22 hours ago, siteseer said:

 

Hi Ziggycardon,

 

Is it possible for you to take another photo of this tooth?  That looks like a view of it from an angle as it sits up.  It would be interesting to see a side view.  I have at least two Plesiadapis teeth from the same locality (a complete incisor and lower premolar).  Your tooth looks different.  I have a couple of teeth of other mammals and will try to get clear photos of those.

 

The teeth I have were given to me by a friend who received them as part of a trade with a French collector back in the 1960's.  They were mostly trading fossil shells, but because he knew my friend had an interest in vertebrates, he gave them to him.  I'm not sure if the teeth are found in the same layer as the shells.

 

Jess

 

Will do next week!  

I believe mine is either a lower canine or lower 1st premolar.

 

 

I also see we got Plio/pleistocene  
So I'll kick off the next round with the Ediacaran to keep the challenge going!

 

A Nemiana simplex fossil found in the Yampol Member, Mogilev Formation, Balday Series, Novodnestrovsky Quarry, Podolia, Vinnitsa region, Ukraine from the Ediacaran  

 

[Paleorunner]

We continue with the early Cambrian.
A Megapaleolenus Deprati, Yunnan - China.

 

[Kane]

The humble, enrolled Flexicalymene senaria from the Verulam Fm, Ontario, Canada. Ordovician.

[JamieLynn]

It's been a while since I've checked in.....I see it's still going strong! Here is a Silurian coral from Oklahoma - Pleurodictyum 

 

 

 

[Paleorunner]

Phillipsastrea sp. Devónico medio. D`Quzina - Marruecos.