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jikohr

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Hi everyone!

 

I've been going over some small Hell Creek Theropod teeth and this one stood out to me. The serrations on the mesial side are pretty worn but using my microscope I was able to find a few enough remnants to get a measurement. The mesial serrations near the tip were pretty intact as well and I got a similar density there.

CH 11 mm

CBL 7 mm

CBW 2.5 mm

7.3 denticle/mm mesial

7 denticle/mm mesial tip

4.19 denticle/mm distal

mesial carina is completely straight, serrations do not extend to base. So what do you all think? Is it Dakotaraptor?1329137134_serrations1.thumb.jpg.06d6f9ebbbf85f251bbf80aa005ec685.jpg1989956897_serrations2.thumb.jpg.72b644292a7184686ada67e2e3698869.jpg844347135_serrationsbase.thumb.jpg.94e12d00620b117b9fe0679ab4ae10c8.jpg1182599216_serrations3.thumb.jpg.b58bed04313bd040127e38bef12a451b.jpg746824904_serrationsposterior.thumb.jpg.83b8d5202e9b6caa7c1bc481191b8d49.jpg1888368536_serrationsanterior.jpg.37061e870a96b139ef7c9b38e28d55cb.jpg1005511426_serrationsanterior2.thumb.jpg.103ba6ff6d04dee671ca1bc5f8c1b9a8.jpg

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theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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Nice man, congratulations.:D

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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1 hour ago, Troodon said:

Yep I do believe it has the characteristics of a Dakotaraptor tooth.  Nice

 

11 minutes ago, fifbrindacier said:

Nice man, congratulations.:D

NO WAY!!!!

I was genuinely beginning to think this thing didn't exist! So many wind up being Nanos, it's crazy!

By the way, do we still think these guys were pack hunters? I just find it hard to believe there were large gangs of these guys given how ridiculously hard it is to find literally anything from them.

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No idea what kind of hunter it was, all we know about it is a few bones and teeth.  You can speculate all you like on these large Dromaeosaurid.  The Utahraptor block that is currently under study might help resolve that question

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  • 3 weeks later...

Hi everyone!

 

I posted this tooth a few weeks ago and the id came back as Dakotaraptor and as you can imagine I was elated. I recently tried for some better photos and noticed some faint lines along the tooth and now I'm worried it might actually be a large Acheroraptor and the photos I posted the first time just weren't good enough.

CH is 11 mm

CBL is 7 mm

CBW is 2.5 mm

Distal serration density is 4.19 per mm

mesial serration density ranges from 7.3 (middle) to 7 (tip) per mm

and here are the new photos. What do you all think?

20.jpg

21.jpg

22.jpg

23.jpg

26.jpg

27.jpg

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TOPICS MERGED for continuity's sake.

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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1 minute ago, Fossildude19 said:

TOPICS MERGED for continuity's sake.

You're the best man, thanks!

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44 minutes ago, jikohr said:

You're the best man, thanks!

;)

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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I remember noticing that, but thinking it might look consistent with the wear marks. I just posted a tooth for ID with similar optical trickiness (but more with respect to the shape of the mesial carina) and I tried this angle/lighting. Maybe it'd help to get one like this of the ridges:

 

9.thumb.jpg.428d356ae06c032417fdb5b50e592403.jpg

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