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Meristodonoides sp. Spine, Rush Creek

Mikrogeophagus

By Mikrogeophagus

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Meristodonoides sp., North TX

Cenomanian, Cretaceous

Jun, 2023

 

Surprisingly common in this pocket. I've found 3 fragments in a single hunt, this being the largest. I chose the genus Meristodonoides because those are the only Hybodontiformes teeth I've found so far.

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From the album:

Woodbine Formation

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Photo Information

  • Taken with Apple iPhone 11
  • Focal Length 4.3 mm
  • Exposure Time 1/2967
  • f Aperture f/1.8
  • ISO Speed 32
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Mikrogeophagus

Mikrogeophagus

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2 hours ago, Tidgy's Dad said:

So, that's a fin spine? 

Yep to the dorsal fin! To my knowledge, all Hybodont sharks have them. They may have been venomous as well. I kinda think of stone fish.

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