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Post Oak Creek

Post Oak Creek

Fossils found in Post Oak Creek, and in nearby creeks in Sherman, TX. 

 

The Cretaceous fossils are washed out of the Eagle Ford Group (~ 90 Ma), and mammal material from the Pleistocene or younger.

 

Vertebrate Faunal List (work in progress):

 

Rarity (purely subjective):

Abundant, Common, Uncommon, Rare, Ultra-Rare

Sharks:

Cantioscyllium sp. ('bamboo shark')*

  • Cantioscyllium decipiens

Chiloscyllium sp. ('bamboo shark')*

  • Chiloscyllium greeni

Cretodus sp.

Cretorectolobus sp. ('carpet shark)*

Cretalamna sp.

Cretoxyrhina sp. ('ginsu shark')

  • Cretoxyrhina mantelli

?Galeorhinus sp. ('tope shark')*

cf. Ginglymostoma sp. ('nurse shark')*

Lonchidion sp. ('Hybodont shark')*

Meristodonoides sp. ('Hybodont shark')*

Pseudocorax sp. ('False-crow shark')

Ptychodus spp. ('crusher shark')

  • Ptychodus anonymus
  • Ptychodus atcoensis
  • Ptychodus mortoni 
  • Ptychodus whipplei

Scapanorhynchus spp. ('goblin shark')

  • Scapanorhynchus raphiodon
  • Scapanorhynchus texanus

Squalicorax spp. ('crow shark')

  • Squalicorax falcatus
  • Squalicorax kaupi

Fish:

Amiidae indet.*

Enchodus sp. ('saber-toothed herring')*

Ischyrhiza sp. ('sawskate')*

Pseudohypolophus sp. ('guitarfish')*

  • Pseudohypolophus mcnultyi

Ptychotrygon spp. ('sawskate')*

  • Ptychotrygon slaughteri
  • Ptychotrygon texana
  • Ptychotrygon triangularis

Pyncodontiformes

Rhinobatos spp. ('guitarfish')*

  • Rhinobatos caseiri
  • Rhinobatos incertus

Reptile:

?Coniasaurus crassidens*

Mosasauridae

 

* micro-vertebrate - should use/need magnification to find

 

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