Scollard and Dinosaur Park Formation Fossils

[dingo2]

#1 I've seen teeth that look like this one before in @Ridgehiker trip reports to the dinosaur park formation, but he did not describe what they are. This one appears to be rooted, found in Dinosaur Park Formation

#2, #3 I believe both of these are fish scales. Possibly Gar, but I'm not certain. Found in Dinosaur Park Formation

#4 This one is a mystery to me. Not sure if its a tooth or something else. One side looks like a chewing surface. Found in Dinosaur Park Formation

#5 Guessing this is some kind of fish vert. Found in the Scollard, only fish material I have from there.

#6 Some kind of dinosaur tooth, looks similar to pachycephalosaur. Found in the Scollard.

#7 Pretty sure this is a Troodon tooth. Found in Scollard.

[Troodon]

1 might be a Thescelosaurus, can you post closer images of both sides.

2,3 gar fish scales cf  Lepisosteus

5 fish vertebrae

6 need to see the other side looks like a nodosaur tooth

7 premax of a Troodontid

 

When posting teeth photos can you have the crown facing up not down and always both sides

 

[dingo2]

Thanks for your help again @Troodon . I apologize for the image quality. I need to get a macro lens for better close up shots, hopefully these will be sufficient.

#1

#4 Do you have any thoughts on what this could be? This is the flat side that I thought could maybe be a chewing surface.

And this could be the root end

#6 

Edited January 2, 2022 by dingo2

[Dino Dad 81]

The troodon tooth is the only one I'm familiar with. Really awesome tooth there. Hard to find one with such "wounding"-looking serrations.

[dingo2]

Yeah I have found only a couple raptor teeth, they seem to be much more sparse than Tyrannosaurids where I go (probably partially due to collecting bias because I'm looking for bigger stuff). When the sun gets low, its easier to spot the small things because the light makes even the little things reflect and catch your eye, and thats what happened with this tooth. I knew it was a Troodon as soon as I picked it up.

[Troodon]

Thanks, no apologies necessary just trying to make it easier and quicker to ID.  You might look into a USB scope.  Great for closups and they are relatively inexpensive.

 

#1  Sorry its a Croc tooth.

#4 No Idea

#6 is a indeterminate Nodosaur

#7 is not Troodon but a indeterminate Troodontid.  We have no idea what they will call this morphology from the Scollard.  Might be Stenonychosaurus

 

[dingo2]

Thanks! Croc definitely seems right because I've got a few from the area and it definitely looks similar to some. I've noticed that some have the ridges that run vertically along the crown like the one in this post, and some dont. Is this representative of different species or no? 

 

For # 6, what are the characteristics you are looking at to define this tooth as a nodosaur, and not pachycephalosaurus?

[Troodon]

There are three Croc's in the Hell Creek.  The anterior teeth of two of the more common ones Borealosuchus and Brachychampsa are indistinguishable from one another.  Vertical ridges are probably not a diagnostic characteristic.  Not much is published on the morphs of these teeth.

 

With the Nodosaur tooth the best way I can describe these crowns is like a baseball catcher's mitt with large denticles.   Pachy crowns are more triangular with fine denticles.  Here are two topics you can look at to help identify them.   

 

 

Ankylosauridae & Nodosauridae Teeth - Can You differentiate? - General Fossil Discussion - The Fossil Forum

 

Pachycephalosaurid/Thescelosaurus Tooth Identification - General Fossil Discussion - The Fossil Forum