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My Jurassic Park: Two Medicine Formation


Troodon

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Fantastic pieces as alway! :D


My first specimen to share is what I believe to be a Euopcephalus sp skull. The very front end is reconstructed so I'm not 100% positive. Around 15" (38cm) Square

attachicon.gifEuSkull1B_edited-1 copy.jpgattachicon.gifEuSkull1A.jpgattachicon.gifEuSkull1.jpg

Condyle

attachicon.gifEuSkullCond.jpg

You know. It might be possible to put a species on it, even with the front missing. A while ago there was a study on Euoplocephalus skulls that looked at the armour plating on the head to identify the species. It mihgt be just as easy as looking at the layout of the armour.

I forgot what the paper was called. But it might be worth looking up. Here are a few images from it.

EDIT: Found it!

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0062421

post-3991-0-44096200-1444210146_thumb.jpgpost-3991-0-42897500-1444210151_thumb.jpgpost-3991-0-44968000-1444210156_thumb.jpgpost-3991-0-60159800-1444210235_thumb.jpg

Edited by LordTrilobite
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Olof Moleman AKA Lord Trilobite

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You know. It might be possible to put a species on it, even with the front missing. A while ago there was a study on Euoplocephalus skulls that looked at the armour plating on the head to identify the species. It mihgt be just as easy as looking at the layout of the armour.

I forgot what the paper was called. But it might be worth looking up. Here are a few images from it.

EDIT: Found it!

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0062421

attachicon.gifFig4 skulls dorsal diagram.jpgattachicon.gifFig S2 UALVP31.jpgattachicon.gifFig S8 TMP1997_132_1.jpgattachicon.gifFig2 cranial terminology.jpg

Thanks for the paper will check it out. Looks great
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Magnificent and informative! I am awed and envious at the same time! :envy:

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  • 1 month later...
  • 1 month later...

Is there a way to identify Leptoceratops teeth?

Leptoceratops has a single root while most ceratopsians' teeth have 2 roots coming off a single tooth.

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Is there a way to identify Leptoceratops teeth?

Yep, like Runner64 said they have a single root and one that is typically more vertical than horizontal. However, sometimes the root is missing or I believe there are a couple of jaw positions of other ceratopsian that also have single root so you also need to look at the crown. Most North American Ceratopsian have a triangular shaped crown with a strong ridge down the center. Lepto's have more of a U shaped base, a flatter tip and a center ridge that is not has pronounced. Here are some examples:

Triceratops

post-10935-0-95347100-1451128731_thumb.jpgpost-10935-0-55449200-1451130228_thumb.jpg

Leptoceratops

This is what you typically see sold, unerupted teeth

post-10935-0-12826000-1451130137_thumb.jpgpost-10935-0-63692700-1451130156_thumb.jpg

A maxilla section with a couple of Lepto teeth that are erupted.

post-10935-0-91431700-1451130170_thumb.jpg

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Is there a way to differentiate Einiosaurus teeth from other ceratopsians from Two Rivers? I doubt it, but just curious.

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You are correct unless they are found with other diagnostic bones you cannot tell them apart

Edit: BTW the teeth I have were found in an Eino bone bed.

Edited by Troodon
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You are correct unless they are found with other diagnostic bones you cannot.

Edit: BTW the teeth I have were found in an Eino bone bed.

Thanks, I've been looking for one and I see some up for sale on some websites.

As a follow up question, does this mean that all Triceratops teeth have the potential of belonging to Torosaurus and Tatankaceratops?

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Yes if you go along with the premise that those species are valid it would be difficult to distinguish between the teeth. Jury still out and the debate will continue with paleontologists.

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  • 1 year later...

Have not added to this Jurassic Park post in quite a while.  

 

Recently picked up this Tyrannosaurid foot claw.  It comes from the same Quarry that Bambiraptor was discovered which is pretty cool.   I'm leaning toward this being a Daspletosaurus sp. simply because of size.  I've yet to see a Gorgosaurus with that size foot claws and the evidence is mounting that Albertosaurus was not in this fauna, but who knows.

58c83d960362f_TyrannoDaspleto1D54H.thumb.jpg.57afadc22910941fe50d9f3b19f0346e.jpg58c83da54adb3_TyrannoDaspleto1AD54H.thumb.jpg.2246b2ccbe825c0096477b46cff39f0d.jpg58c83dadb74f0_TyrannoDaspleto1BD54H.thumb.jpg.5e2019d3d49a74530140843377f3ff65.jpg58c83db7e5f9f_TyrannoDaspleto1CD54H.thumb.jpg.47f41a4f912f9d7539e5aa68d779481f.jpg

 

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A worthy addition to your fine collection!

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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  • 9 months later...

Updated a few photos, rainy day, first in months.  Bones from a Hypacrosaurus site with infant material present.   

 

Associated Fragment of Maxilla and infant Foot.

5a380f66a34bc_HypMax.thumb.jpg.aa67d03cf5e579136a49dd2dd0863200.jpg

 

Bones are quite distorted and in positioned for best photo :D

HypFoot.thumb.jpg.0e3d62d7550f97159997aaa4af12fbb2.jpg

 

Ungual in above Photo.   Reluctant to do any additional prep on ungual, very fragile and super rare.  Not replaceable.

5a380f747ae1b_InfantUngual.thumb.jpg.4aeae56aaf33accc77c400efb8ea1885.jpg

 

Humeri not associated

HypacHumuri.thumb.jpg.644cbb88f60da9e07396fa7b07dbaf85.jpg

 

Femur

5a380f6293e7c_HypFemur.thumb.jpg.533403356b06059bd34e65d858d4d30e.jpg

 

Tibia

5a380f69aaaa6_HypacTibia.thumb.jpg.c7fbd9ea8cceade3d6c6054d4bcfa4a2.jpg

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  • 3 weeks later...

Goodness! 

How green with envy is it possible to get? 

I am so green I'm turning black. 

Awe inspiring and beautiful. 

Life's Good!

Tortoise Friend.

MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160-1.png.60b8b8c07f6fa194511f8b7cfb7cc190.png

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Wow that is the most wonderful collection and a very informative post. For a second I thought it was fossil Friday. :D thank you for showing 

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