Phylum: Echinodermata

Class: Asteroidea - Asteroids
(starfish)

Crateraster texensis [+] (Pentagonaster texensis) Strata:  Pawpaw Shale Period:  Cretaceous  (c. 97-98 mya) Loc: Tarrant Co., TX.  Dec. 2010. Wes K.	Altairia wintoni (Comptonia wintoni) Strata:  Pawpaw Shale Period:  Cretaceous  (c. 97-98 mya) Location: Tarrant Co., TX.  1920. Adkins collection, T.C.U.
Crateraster mccarteri (Austinaster mccarteri) Strata: Austin Chalk Period:  Cretaceous   Location: Travis Co., TX.  1930s. More info.	Denebia americana [+] (Pentaceros americanus) Strata:  Pawpaw Shale Period:  Cretaceous  (c. 97-98 mya) Location: Tarrant Co., TX.  1920. Adkins collection, T.C.U.
Crateraster texensis ? Strata:  Pawpaw Shale Period:  Cretaceous  (c. 97-98 mya) Location: Tarrant Co., TX.  April 2014.		Betelgeusia reidi Strata:  Pawpaw Shale Period:  Cretaceous  (c. 97-98 mya) Location: Tarrant Co., TX.  March 13, 2007. Found by Lance H.
Betelgeusia reidi? Strata:  Del Rio Clay (= Grayson) Period:  Cretaceous  (c. 96 mya) Location: McLennan co., Tx? Picture from Ebay saved by Frank H.

Class: Ophiuroidea - Ophiuroids
(brittle stars)

Brittle star arm Strata:  Pawpaw Shale Period:  Cretaceous  (c. 97-98 mya) Location: Tarrant Co., TX.  Sep. 15, 2016.	Brittle star arm? Strata:  Grayson Shale Period:  Cretaceous  (c. 97 mya) Location: Tarrant Co., TX.   March 10, 2019.
Ophiura sp. (?) brittle star Strata:  Pawpaw Shale Period:  Cretaceous  (c. 97-98 mya) Location: Tarrant Co., TX.  Kevin Knight
Ophiodoris holterhoffi  (proximal arm fragment) [image from publication below]  Strata:  Glen Rose Fm. Period:  Cretaceous   Location: Texas.  2013.  Found by Frank H.

References:

" Shallow-water brittle-star (Echinodermata: Ophiuroidea) assemblages from the Aptian (Early Cretaceous) of the North Atlantic: first insights into bathymetric distribution patterns "
By: Ben Thuy, Andrew S. Gale, Sabine Stohr, Frank Wiese 2013