Jump to content

Lance Formation Fossil Id


troodon_hunter97

Recommended Posts

Here are several bones that may possibly be crocodilian or from a small dinosaur. The two smaller ones look somewhat like phalanges. The larger on seems to be a tibia but not sure what from. Any identification of these bones would be a great help.

If you go to fossil.swau.edu and type 18615, 18828, or 22119 into the browse tab you can view a 360 degree animations of these bones.

HRS18615_0032.JPG

HRS18828_0028.JPG

HRS22119_0032.JPG

Link to comment
Share on other sites

I can't see enough of the first two to say anything, but indeed the last one looks like a croc tibia. I tried to get the 360 view of 18615 to work, but it is taking forever to download. And 18828 gave me some nice pix of a hadrosaur fibula.. not one of these bones.

22119 works well. That is the tibia.

Link to comment
Share on other sites

Thank you JPC.

Here is another bone that I am trying to figure out what it is from. It is a scapula but what it is from I really don't know.

A 360 degree view is also at fossil.swau.edu under 08395 in the browse bar.

HRS08395_0032.JPG

Link to comment
Share on other sites

Wow, what a great website. Lots of data, and the 360 photos are a wonderful resource. (Although it would be helpful to have end-views of the bones as well.)

The tibia is a dead ringer for a small hadrosaur. Might want to double check other small ornithischians. Not a crocodile; their tibiae are much simpler bones with simpler epiphyses. Hadrosaurs (and many other animals) have 3 "bumps" on the lateral side of their proximal epiphysis, with the middle bump offset to one side. The distal end has a nice angle to it. (Incidentally, the photos are upside-down, showing the distal end at the top.)

Link to comment
Share on other sites

Thanks again Opisthotriton. After doing a quite of bit of searching, decided it was from a Thescelosaurus.

Link to comment
Share on other sites

Thesc would make sense. The bone texture and epiphyses seem too mature for a hadrosaur of that size.

Link to comment
Share on other sites

I will bow to ophis's expertise here. I checked out 08395... scapula was my first guess, but the curvature on the down (in the photo) end is more than I would expect. But it is a thin sheet of bone with a slight concave aspect, and a thickening on the bottom end. I am going to stick with a scapula, but not sure which animal.

Link to comment
Share on other sites

Stumped on the scapula...not turtle, not crocodile, not champsosaur, not any of the obvious dinosaur options...or maybe it's not a scapula at all. Weird clavicle or fish part? I feel like I've seen this bone before, I just can't hunt it down.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...