Weno and Pawpaw Formations 57 



and contains some identical species. This latter fauna is well developed 

 on the South Bosque River, five miles west of Waco and includes Turrilites 

 bosquensis Adkins, Flickia ( ?) bosquensis Adkins, Acanthoceras worth- 

 ense Adkins, Schloenbachia spp. and other common Grayson and Pawpaw 

 pyrite species. It is notable that the preservation of this fauna is almost 

 exclusively pyritic. 



FAUNA OF THE GRAYSON MARL 



* Pyrite or limonite species. 



(C) Cidarid zone. 



(Co) Coral zone. 



U Upper member. 



M Middle member. 



L Basal member. 



CEPHALOPODS: 



Turrilites sp. (medium size) (M). 

 "Turrilites sp. aff. worthensis A and W. 

 *Turrilites spp. (M). 

 *Turrilites sp. (whiplash) (M). 

 *ammonite aff. Flickia (small, keelless) (M). 

 *Hamites 3 spp. (M). 



Acanthoceras ? sp. (Denison, WSA). 



Acanthoceras spp. 



Engonoceras spp. (L). 

 *Schloenbachia spp. 



ECHINODERMS: 



Hemiaster calvini Clark, 

 starfish sp. 

 Goniophorus (?) sp. 

 cidarid spines 3 spp. (C). 

 Cyphosoma volanum (?) Cragin. 

 Enallaster texanus (?) Roemer. 

 Enallaster sp. aff. traski (?) Whitney. 

 Enallaster sp. aff. bravoensis Bose (?). 



CORALS: 



Placosmilia (?) sp. (Co). 



GASTROPODS: 



Cerithium sp. 



Turritella marnochi (?) White. 



Turritella sp. 



Cinulia pelletti Whitney. 

 *Gyrodes (?). 

 "Turbo sp. 

 Turritella sp. (sharp spired) M. 



