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

[Nimravis]

1 hour ago, PR0GRAM said:

HOLY S$#?

That is a gorgeous Tully! Head, tail, mouth, AND do I spy… eye spot pigment?!?

Wow, beautiful specimen!

Thanks- it is very nice.

 

[Nimravis]

Leidyosuchus formidabilis Tooth

Bullion Creek Formation 

Sentinel Butte, North Dakota

Paleocene

 

[Nimravis]

Fossil Bird Tracks

Green River Formation 

Wyoming

Eocene

 

[Nimravis]

Metamynodon Canine (Top)

Merycoidodon Canine (Bottom)

 

White River Formation

Scenic, South Dakota

Oligocene

 

 

 

[hemipristis]

Trigonotodus serratus, Miocene Choptank Formation, Talbot County, Easter Shore of Maryland, USA

Edited November 16, 2022 by hemipristis

[Paleorunner]

9 hours ago, PR0GRAM said:

I don’t have a paper at the moment to cite, however, I’ve seen these also commonly called concretions. Do you know if there has been any definitive conclusion as to what these are? Regardless this is a beautiful piece, I haven’t seen very many this large pop up!

 

Well, all the information I have is the seller's description. 

 

 (They have been formed by Microbiolites (stromatolites) and come from the Cretaceous Cenomanian Sandstones of the Sahara Desert. Morocco..)

[marguy]

 

on the site of an organizer of geological circuits in Morocco: "Vers la palmeraie de Saf-Saf, recherche de pseudo-stromatolites "= translate : Towards the palm grove of Saf-Saf, search for pseudo-stromatolites

[JamieLynn]

Pliocene of North Carolina

Catshark  Scyliorhinus 

[Nimravis]

Ursus spelaeus Lower Jaw

Romania

Pleistocene

 

This piece is another favorite of mine.

 

 

 

 

Edited November 16, 2022 by Nimravis

[Paleorunner]

3 hours ago, Nimravis said:

Ursus spelaeus Lower Jaw

Romania

Pleistocene

 

This piece is another favorite of mine.

 

 

 

 

 

That's a nice piece, I love those crowns.  

 

[Pleuromya]

Round 9 is finished, there is only one more round in this competition! The Points are:

 

@Kasia 25 Points

@Paleorunner 23 Points

@fossilsonwheels 13 Points

@Nimravis 8 Points

 

Up next is the Precambrian!'

 

[JamieLynn]

@Pleuromya and @MeargleSchmeargl   Is there a "rule" that says if no one posts the next time period in say...24 hours, can we skip it and go on to the next? Precambrian and Paleocene seem to really bog down the run...

[Pleuromya]

 

13 minutes ago, JamieLynn said:

@Pleuromya and @MeargleSchmeargl   Is there a "rule" that says if no one posts the next time period in say...24 hours, can we skip it and go on to the next? Precambrian and Paleocene seem to really bog down the run...

I think there could be, it might be best just to skip to the Cambrian.  

[PR0GRAM]

Okay, let’s get this round started!

 

Precambrian:

Horodyskia williamsii

Backdoor Formation, Australia

[Missourian]

To keep things moving, could banded iron formation count for Precambrian?

[FranzBernhard]

1 minute ago, Missourian said:

To keep things moving, could banded iron formation count for Precambrian?

There is no penalty associated with posting a banded iron formation .

Franz Bernhard

[historianmichael]

Olenellus roddyi

Early Cambrian Period

Kinzers Formation

Pennsylvania 

 

[historianmichael]

Macroporaster matutinus 

Late Ordovician Period

Trenton Group

Pennsylvania

 

[historianmichael]

Planolites

Late Silurian Period

Mifflintown Formation

Pennsylvania

 

[Missourian]

Phacobid trilobite

Devonian

Morocco

 

 

[Missourian]

Mollusk with preserved color pattern (via mineralization)? The slight asymmetry of the pattern leads me to lean toward bellerophontid gastropod

Westerville Limestone, Kasimovian/Missourian Stage, Pennsylvanian, Carboniferous

Raytown, Missouri, USA

 

 

Edited November 18, 2022 by Missourian
Added phrase

[Herb]

Permian, Timor, Deltoblastus sp.

Edited November 18, 2022 by Herb

[Ludwigia]

Acrodus sp. from the Middle Triassic Muschelkalk Formation in Zwingelshausen, Germany.

 

[Ludwigia]

Porporoceras verticosum from the Jurassic Early Toarcian bifrons zone at Belmont, France.

 

 

 

[Norki]

Basal Hesperornithine tooth (Pasquiaornis sp.) from the Cretaceous late Cenomanian Ashville fm, Saskatchewan, Canada.

 

Scale in millimetres.

 

Edited November 18, 2022 by Norki