Formation: Del Rio

Del Rio Formation

 Aprox. 97-100 Million Years Ago

Ammonite Paracalycoceras sp.

Ammonite Mariella worthensis

Ammonite Otoscaphites subevolutus 

Ammonite Adkinsia bosquensis 

Ammonite  Anisoceras sp.

Ammonite Submatelliceras brazoense

Nautiloid Paracymatoceras sp 

Echinoid Goniophorus scotti

Echinoid Cidarid sp

Shark Cenocarcharias tenuiplicatus 

Shark Leptostyrax sp.

 Shark Cretelamna appendiculata 

Unknown Crab Claws

Unknown Crab Claws

Unknown Crab Claws

Unknown Crab

Unknown Crab

Unknown Crab

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Unknown Crab Claw

Coral Trochocyathus sp

Crinoid Roveacrinus signatus

Crinoid Roveacrinus latealatus

Crinoid Plotocrinus spiculatus

Crinoid Roveacrinus signatus

Unknown Crinoid

Starfish Fragment


Starfish Ophiuria sp

Starfish Ophiuria sp

Starfish Ophiuria sp

Starfish Ophiuria sp. Armtip

Starfish Ossicle

Starfish Ossicle

Unknown Fish Tooth

Fish Tooth Pycnodont sp.

Fish Tooth Enchodus

Gastropod Cerithium texanum

Gastropod Turritella sp. 

Gastropod Tylostoma harrisi

Gastropod Unknown

Gastropod Ampulina sp.

Gastropod Fusus sp.

Gastropod Nerinea volana 

Gastropod Unknown

Gastropod Fusus simodsi

Gastropod Drepanochilus mudgeana 

Gastropod Turritella graysonensis  

Gastropod Unknown

Bivalve Neithea texana 

Oyster Texigryphaea grasonana  

Oyster Ilymatogyra arietina

Bivalve Plicatula sp. 

Oyster Ilymatogyra arietina

Worm Pyrgogplon squamatus