Cretaceous Finds 4

[ChurrO]

Hey,

As a little recap to the last posts, a bit ago me and family were working on an excavation project for a house within Caldwell County in Central Texas and accidentally broke through the upper cretaceous layer (namely the Navarro group) and found a bunch of fossils.

I've been trying to ID some of the stuff but I ran into a wall on some finds so I'm hoping to get some help.

1.

This looked really interesting to me because of the shape. Almost looks like a tooth of sorts but it could be bone as well.

2.

I know its a bone, but i was wondering if its possible to ID from what animal it came from.

3.

This had an odd shape to it, but I couldn't figure out what it was.

 

From here on out, these are some smaller fossils. Sorry if it's a bit blurry, I had to get a microscope to get a decent picture. All of them are withing the range from 1 - 5 mm in length.

1a.

maybe fish tooth?

2a.

I'm pretty sure its fish teeth, but I has hoping to get the species.

3a.

I'm thinking denticles?

4.

No idea. Maybe another type of fish tooth?

5.

I think it's a shark tooth, namely squalicorax sp, but I'm not sure.

 

I know this was a bit lengthy but I would appreciate all the help I can get. 

 

Thanks for the help!

[Chalkdude]

I agree with squalicorax on number 5 but not sure of the exact species.

[Mikrogeophagus]

1 and 4 look like bases of Ischyrhiza mira rostral teeth and 1a could be the tip, but it's hard to say. Need more angles. 2 looks bony to me rather than toothy (spongey texture instead of layered enamel). I agree with Squalicorax for 5. 3a look like Ischyrhiza denticles of various species (avonicola, monasterica, etc.) though they are a bit enigmatic. It is tough to say whether they are actually from a different species than I. mira or just a different part of the body/rostrum.

 

Here is an I. mira rostral for reference. Note there can be variance in morphologies. Differences in yours could be due to weathering/reworking (they do look pretty reworked)

9 hours ago, ChurrO said:

 

Here is a website that covers sharks from the Navarro Group (Kemp Clay) in TX: http://www.elasmo.com/frameMe.html?file=genera/cretaceous/ptychotrygon.html&menu=bin/menu_genera-alt.html

[automech]

Nice "accident" to happen! Great finds!

[Anomotodon]

Cool finds! I think #2 is also an Ischyrhiza rostral tooth, just heavily eroded (root + base of the crown). #4 may be partial reptile teeth, possibly mosasaur, or some teleost fish.

[ChurrO]

13 hours ago, Mikrogeophagus said:

1 and 4 look like bases of Ischyrhiza mira rostral teeth and 1a could be the tip, but it's hard to say. Need more angles. 2 looks bony to me rather than toothy (spongey texture instead of layered enamel). I agree with Squalicorax for 5. 3a look like Ischyrhiza denticles of various species (avonicola, monasterica, etc.) though they are a bit enigmatic. It is tough to say whether they are actually from a different species than I. mira or just a different part of the body/rostrum.

 

 

Here is an I. mira rostral for reference. Note there can be variance in morphologies. Differences in yours could be due to weathering/reworking (they do look pretty reworked)

 

Here is a website that covers sharks from the Navarro Group (Kemp Clay) in TX: http://www.elasmo.com/frameMe.html?file=genera/cretaceous/ptychotrygon.html&menu=bin/menu_genera-alt.html

Thanks for the help! And thank you for the link, I'll definitely check it out!

 

6 hours ago, automech said:

Nice "accident" to happen! Great finds!

It truly was😂, Thank you!

[ChurrO]

1 minute ago, Anomotodon said:

Cool finds! I think #2 is also an Ischyrhiza rostral tooth, just heavily eroded (root + base of the crown). #4 may be partial reptile teeth, possibly mosasaur, or some teleost fish.

Thanks for the help!