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They went through the window screen (STH)


ynot

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Thought I should add this tooth....

5c193daaed778_nanoab-0018a.thumb.png.7e6dbd8c182f5f9507ba753b81c053a6.png

 Carcharhinus species alternate symphyseal tooth is the most likely ID for this little tooth.

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Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

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1 hour ago, ynot said:

Thought I should add this tooth....

 Carcharhinus species alternate symphyseal tooth is the most likely ID for this little tooth.

Yeah, saw this on the other thread. 

Very interesting and unusual. :)

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Life's Good!

Tortoise Friend.

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

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  • 2 weeks later...
On 7/8/2018 at 10:43 PM, ynot said:

Thought I should add these to this thread...

Unidentified fish teeth (?)

5b42cc1fb6d76_nano2-0005.png.b3bc771d4edd333a6b877a5f87c294cb.png5b42cc3a52867_nano2-0007.png.222a2c6ac38ea327a49e505a047ec3fe.png

 

 

 

On 8/24/2018 at 9:22 AM, ynot said:

And another one of these strange fish teeth...

aa-0005.png.9a5837314878f04d7350cde66c58dbc5.pngaa-0003.png.665da49b3797086f37352bd3dea9b0d6.pngaa-0004.png.aab5c1f868c5680dbda289def27d4d67.pngaa-0001.png.ab205d0a272fadd1fb2f4aaab00df967.png

 

On 8/24/2018 at 9:36 AM, ynot said:

Another fish tooth(?).

aaa-0018.png.16c0e9198badbde35f46df7da22397c8.pngaaa-0019.png.b8b2376c33ebe12efd54068987447b1d.pngaaa-0020.png.4658b6490fc0cd3a7f740aa0f16d8b5d.pngaaa-0021.png.b18020a76f48840e661e0a097914d824.png

 

 

Hi Tony,

Really enjoying the great pictures of the Sharktooth Hill micros. Not sure if you got an ID on the unidentified teeth above. I think they are from younger examples of Heterodontus sp. (anteriors). I see you have identified examples of the adult anterior teeth of Heterodontus sp. in this thread. I haven't come across many examples of the younger age Heteorodontus teeth described in the literature but Welton and Farish's (1993) A Collector's Guide to Fossil Sharks and Rays From the Cretaceous of Texas has a nice illustration in Figure 12 of a series of modern Heterodontus dentitions showing not only how the teeth vary by position in the mouth but also how they vary by age, living up to its name in 2 ways. I don't think I can attach the figure due to copyright but might be able to send by DM if you don't have the reference.

 

Thanks

Luke   

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2 hours ago, BelemnBlues said:

Welton and Farish's (1993) A Collector's Guide to Fossil Sharks and Rays From the Cretaceous of Texas

Sounds like a good reference.

I would appreciate You PM Me the relevant pages.

You can post the pictures here, just give credit to the source.

Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

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4 hours ago, ynot said:

Sounds like a good reference.

I would appreciate You PM Me the relevant pages.

You can post the pictures here, just give credit to the source.

 

Sent you a PM with the full figure and I attached an excerpt from figure 12 (pg. 15) of Welton and Farish's (1993) A Collector's Guide to Fossil Sharks and Rays From the Cretaceous of Texas (http://www.texassharks.org) that shows an illustration of a lower left dental series of a modern Heterodontus franciscanus from 3 life stages. I think your first 3 teeth look like those from the immature anteriors and the 4th is only partial so a bit more difficult to tell but probably more of a juvenile anterior of the same. I saw you had earlier posted an adult anterior which is usually the ones that are figured in the literature. Let me know what you think.

Welton_Farish_excerpt_Heterodontus.jpg

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