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PaleoNoel

A few IDs from recent trip out west

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PaleoNoel

Hi all! I returned from my trip out west a few days ago and wanted to have some fossils identified before I do my big recap of my experience and my photos from the field. Here are some specimens I found of which I'm not certain of their identity. (This will not be my last post of this type from this trip).

 

1. Small theropod tooth (Richardoestesia sp.?, Acheroraptor temertyorum?). (There appear to be serrations on the front of the tooth but the majority of them seem to have worn off or did not extend further than midway through the tooth). (Near Newcastle, WY, Lance Fm.).

IMG_E3156.thumb.JPG.b54d7472b1acf1c96e643a27e46f467b.JPG IMG_E3154.thumb.JPG.73c982be0e0fb84693f2fb82bd4a389d.JPG

 

2. Turtle/Croc toe bone? (Near Newcastle, WY, Lance Fm.).

IMG_E3141.thumb.JPG.563b2164281435087b35a2ae92afb68c.JPG IMG_3136.thumb.JPG.5c638df9cb2395f50daf07e2df28b99c.JPG IMG_3138.thumb.JPG.d47bd036412e5f753ae74c46caa73d2a.JPG

 

3. Larvae? (Douglas Pass, Green River Fm.).

5b5fbdcb465cb_IMG_3114(3).thumb.JPG.782842d6534486d3da138a04329178db.JPG

 

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GeschWhat

That larvae? is really interesting. :popcorn:

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Troodon

1) Hard to call but would lean toward Acheroraptor.  Denticles not right for Richardoestesia or Nanotyrannus

2) Think it's turtle

3)  Not old enough :D no clue

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ynot

Interesting. Maybe a pupae.

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PaleoNoel
1 minute ago, Troodon said:

1) Hard to call but would lean toward Acheroraptor.  Denticles not right for Richardoestesia or Nanotyrannus

2) Think it's turtle

3)  Not old enough :D no clue

Thanks for the help, I didn't think Richardoestesia based on the tooth's curvature and definitely not Tyrannosaurid purely based on the size and thickness. Also the serrations didn't seem large enough for Pectinodon, I just wanted a confirmation to my thought process as it seemed pretty limited as to what it could be. 

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Fossildude19

The insect looks like some sort of larval Diptera.

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Troodon
30 minutes ago, PaleoNoel said:

Thanks for the help, I didn't think Richardoestesia based on the tooth's curvature and definitely not Tyrannosaurid purely based on the size and thickness. Also the serrations didn't seem large enough for Pectinodon, I just wanted a confirmation to my thought process as it seemed pretty limited as to what it could be. 

R. gilmorei can be slightly recurved.  R. isosceles is straight.  I have some Tyrannosaurid teeth that size and smaller.

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PaleoNoel
20 minutes ago, Troodon said:

R. gilmorei can be slightly recurved.  R. isosceles is straight.  I have some Tyrannosaurid teeth that size and smaller.

Yeah I'm just generalizing the smaller theropod teeth, seeing that my tooth didn't share the the key traits of the non-dromaeosaurids in the area. 

 

P.S. You have tyrannosaur teeth under 6 mm? That's quite impressive. I'm pretty sure my smallest tyrannosaur tooth is just the tip of a Gorgosaurus/Daspletosaurus (Judith R. Formation) and that was probably larger than this tooth from Wyoming. Thanks for sharing your knowledge.

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Troodon

My smallest Nanotyrannus teeth are 2.8 and 3.8 mm and my smallest Trex teeth are 4 and 4.4 mm

The smaller teeth are later in the attached topic

 

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jpc

I am leaning towards Acheroraptor on the tooth, and croc on the toe bone.  Larva... yes, not larvae (plural).  Need an insect expert and good views of the head and tail ends to ID it.    

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Carl

I have found larvae like that at Douglas Pass and I was told they are botfly larvae.

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PaleoNoel
1 hour ago, Carl said:

I have found larvae like that at Douglas Pass and I was told they are botfly larvae.

Thanks, after looking at some pictures online it looks like that's probably what it's from.

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