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

[hemipristis]

3 hours ago, Nimravis said:

These are some really pretty teeth.

They’re probably my favorite to collect.  I spent more time combing the Lee Creek spoil piles in search of these than I’m willing to admit…

Edited December 16, 2022 by hemipristis

[Gramps]

On 12/12/2022 at 1:29 AM, Wrangellian said:

Wonderful. This is interesting... There is a very similar cycad (indistinguishable, to me) from over here (Campanian age) called Nilssonia vancouverensis, unusual in being a solid leaf rather than with pinnules like other cycads or ferns etc. and I read this from wikipedia:

Nilssoniopteris is an extinct form genus of leaves belonging to the Bennettitales. Leaves are slender and often entire-margined (smooth-edged), though some species have dissected leaves with numerous small segments extending down to the rachis of the leaf. Nilssoniopteris-like leaves are distinguished by their syndetocheilic stomata, indicating bennettitalean affinities. Similar "taeniopterid" leaves are placed in the genus Nilssonia if their stomata are instead haplocheilic (indicating cycad affinities), or Taeniopteris if the cuticle is not preserved.

Beautiful!!

[siteseer]

8 hours ago, hemipristis said:

Not to brag (ok, yeah it is, haha), these are about a quarter of what I’ve found there. The others are missing one or both cusplets. I wanted to post the better specimens.  I also have a 8 lowers. The lowers are challenging to ID. Most were found in the tailings piles outside the museum. Only a few from within the mine itself.

 

Yeah, most of those found anywhere are missing one or both lateral cusplets.  If anyone hasn't seen one of these teeth before, they are rather flat-bladed - the main cusp and the cusplets so they snap off easier than other teeth.  A complete one is a collector's dream.  I don't think I had seen that many from Lee Creek before your post but I've seen maybe that many from Summerville, SC (Late Oligocene) and some from Argentina (Oligocene-Miocene).  I have one or two from France and Germany and maybe one from one other site.  I always bought or traded for them when I could because you don't always see them available.  Great stuff. 

[hemipristis]

Can I post a fossil that identifies as Precambrian to keep things rolling?   

Edited December 17, 2022 by hemipristis

[FranzBernhard]

1 hour ago, hemipristis said:

Can I post a fossil that identifies as Precambrian to keep things rolling?

Please! We will judge it .

Franz Bernhard

[rocket]

hm, before we wait till Christmas (7 days without fossils, too much) a second early medusae from Jin Jia , Xu Pu County, Hunan, China. Ediacarium

Size is around 10 cm

 

 

Edited December 17, 2022 by rocket

[JamieLynn]

@hemipristis - in the original post we were to start with Cambrian so if there is no Edicarian (of which there are SOME, but few) we can start with Cambrian. 

[rocket]

42 minutes ago, JamieLynn said:

@hemipristis - in the original post we were to start with Cambrian so if there is no Edicarian (of which there are SOME, but few) we can start with Cambrian. 

always better, precambrian fossils are really not common...

we can fill perhaps 25 rounds from now with precambrian fossils, but than...

[Tidgy's Dad]

Another Middle Cambrian kutorginate from the Embalse del Luna, Leon, Spain. 

This is Yorkia zafrensis.

[Kane]

Received this as a gift. A large, semi-enrolled asaphid from the Ordovician of Morocco. I never could fully determine its identity (Basilicus?). Sagittal measure of 14 cm (5.5"). 

[Ludwigia]

Rastrites sp. with Monograptus gregarius graptolites from the Early Silurian (Llandoveryium) Upper Birkhill Shale Formation. Found 2009 on the Northern Irish coast at Coal Pit Bay, Donaghadee. The Rastrites measures 2cm. across at the center.

 

[Ludwigia]

Pyritized Cheiloceras sp. goniatites with a ø of 2cm. from the Late Devonian (Famennian) outcrops at Brilon-Nehden, Sauerland, Germany. These were a gift from a collector colleague.

 

[siteseer]

Ctenacanthus occidentalis - shark tooth

Late Carboniferous

Scholkowo, near Moscow, Russia

14mm high

 

[hemipristis]

11 hours ago, Ludwigia said:

Pyritized Cheiloceras sp. goniatites with a ø of 2cm. from the Late Devonian (Famennian) outcrops at Brilon-Nehden, Sauerland, Germany. These were a gift from a collector colleague.

 

Pretty!

[Tidgy's Dad]

I don't have much Permian stuff but here is an Ameura sp pygidium from Kansas

[Jeffrey P]

Diplurus newarki

Coelacanth

Upper Triassic

Lockatong Formation

Newark Supergroup

Old Granton Quarry Site

North Bergen, N.J.

 

Prepared by Ptychodus04

Edited December 20, 2022 by Jeffrey P

[Ludwigia]

Another plant for @siteseer Podozamites distans found 2016 in a sandpit in the Pechgraben, Bavaria. The stratigraphy is Early Jurassic Hettangian Bayreuth Formation. The plate mesures 27x14cm.

 

[sixgill pete]

From the Late Cretaceous (Maastrichtian) an incredible echinoid Phymotaxis tournoueri containing about 50% of its spines.

 

  

 

 

Edit: From the Rocky Point Member of the PeeDee Formation. New Hanover County, N.C.

 

Edited December 20, 2022 by sixgill pete

[rocket]

2 hours ago, sixgill pete said:

From the Late Cretaceous (Maastrichtian) an incredible echinoid Phymotaxis tournoueri containing about 50% of its spines.

 

  

 

 

 

always love the spiny ones..., where does it come from? Peedee Form. from North Carolina?

Edited December 20, 2022 by rocket

[rocket]

so we passed cretaceous, let´s go to eocene

Mene rhombea from a really old collection and prep, might be from 19th century, body has 13 cm

 

[sixgill pete]

9 minutes ago, rocket said:

 

always love the spiny ones..., where does it come from? Peedee Form. from North Carolina?

 

Yes, I just edited my post. Forgot to include that.

Edited December 20, 2022 by sixgill pete

[sixgill pete]

From the Oligocene River Bend Formation, Jones County North Carolina. A nice grouping of Psammechinus carolinensis. 

 

[siteseer]

55 minutes ago, rocket said:

so we passed cretaceous, let´s go to eocene

Mene rhombea from a really old collection and prep, might be from 19th century, body has 13 cm

 

 

 

You skipped the Paleocene.

 

 

[rocket]

3 minutes ago, siteseer said:

 

 

You skipped the Paleocene.

 

 

 

, you´re right, sorry

[sixgill pete]

Ahhhh, I just noticed that too, so ................................

 

from the Paleocene Aquia Formation of Maryland

 

an undescribed myliobatoid (according to Elasmo.com)