Formation: Walnut

Walnut Formation

Aprox. 105 - 106 Million Years ago

Ammonite Metengonoceras sp.

Ammonite Engonoceras stolleyi

Ammonite Oxytropidoceras sp.

Ammonite Oxytropidoceras texanum

Belemnite

Starfish Ossicle 

 Echinoid Coenholecytpus ovatus

Echinoid Heteraster texanus

Echinoid Coenholectypus planatus


Echinoid Phymosoma texanum

Echinoid Tetragramma taffi

Echinoid Tetragramma texanum


Echinoid Leptosalenia mexicana

Echinoid Pliotoxaster sp.

Echinoid Loriolia rosana

Echinoid Spine

Echinoid Mouthpart Rotulla

Echinoid Spine

Unknown Vertebra

Fish Tooth Amia sp.

Fish Vertebra

Crab Claw Unknown Species

Crab Claw Unknown Species 

Crab Leg Unknown Species 

Crab Unknown

Crab Unknown

Crab Unknown 

Crab Pagurus banderensis

Crab Callianassa kloffi 

Crab Unknown

Crab Claw Unknown 

Crab Claw Unknown 

Crab Claw Unknown 

Coral Parasmilia sp.

Coral Parasmilia austinensis

Coral Parasmilia sp.

Unknown Gastropod

 Gastropod Gyrodes pattoni

Gastropod Drepanochilus kiowanus 

Harpagodes stephensoni 

Gastropod Natica texana

Monocyphus brittsi

Gastropod Arrhoges sp.

Gastropod Turritella seriatim-granulata 

Gastropod Arhogges sp.

Gastropod Cerithium bosquense

Gastropod Neritina elapsensis 

Gastropod Nerinea sp. 

Gastropod Tylostoma travisensis

Gastropod Tylostoma tumidum

Gastropod Amberleya mudgeana

Bivalve Inoperna concentricecostellata

Bivalve Pterotrigonia guadalupae 

Bivalve Protocardia coloradoensis 

Bivalve Plicatula sp.

Bivalve Ludbrookia arivechensis 

Bivalve Modiolus sp.


Bivalve Homomya ligeriensis 

Bivalve Inoceramus comancheanus

 Bivalve Trapezium sp.

Bivalve Lima wacoensis

Bivalve Granicardium sabulosum

Bivalve Pholodmya sanctisaba 

Bivalve Neithea occidentalis

Bivalve Pteria pedernalis

Bivalve Neithea texana

Oyster Texigryphaea mucronata

Oyster Texigryphaea roemri

Bivalve Ceratostreon texanum 

Bivalve Cucullaea recedens 

Bivalve Lima bravoensis

Bivalve Homomya aff. ligeriensis 

Bivalve Homomya sp

Bivalve Laternula texana 

Bivalve Homomya tarrantensis 

Bivalve Protocardia texana 

Bivalve Cyprimeria sp,

Bivalve Pinna comancheana 

Foramnifera Dictyoconus walnutensis


Unknown Foraminifera

Serpulid Worms