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Carcharhinus or Carcharocles or Carcharodon?


Ludwigia

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I've been going through my shark tooth collection recently trying to refine my ids. This one here has me somewhat stumped. I had identified it as Carcharhinus priscus, but I'm not at all sure any more and am now starting to wonder if it may be a chub or great white. The first photo, which I think is the labial view, seems to fit, but what I believe to be the lingual view (2nd photo) has me confused. The tooth is from the southern German Miocene Burdigalian. Slant length 15mm. Any advice here would be appreciated.

 

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Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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42 minutes ago, Al Dente said:

It’s Carcharhinus. You can see an eroded nutrient groove.

Thanks. That nutrient groove was giving me some doubt.

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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Hi Roger,

 

It's tough enough to identify a lot of Carcharhinus teeth to species when they are late Miocene-Pleistocene age but at least you can see how they compare to a modern species that dates back that for.  For early Miocene teeth, it's unlikely a given tooth is from even an early representative of a modern species so you are left with comparing it to named species of that time.  I think the bull shark and C. macloti go back that far - not sure. 

 

I have seen C. priscus referred to as an invalid species and I have seen it used as a valid species by researchers.  

 

Jess

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1 hour ago, siteseer said:

 

I have seen C. priscus referred to as an invalid species and I have seen it used as a valid species by researchers in both cases.  

 

Jess

The German researchers seem to have no problem with the name. Most finds here are assigned to that species.

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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