Plate 4 



Figures 



(re-illustration of VanderpooPs types) 



la,b. Paracypris weatherfordensis Vanderpool, Glen Rose Formation, west of 

 Weatherford, Texas, x 52. 

 la. Exterior of paratype left valve, U.S.N.M. 1.32502 

 lb. Right side of holotyp? shell, U.S.N.M. 132503 

 2a, b. Paracypris e. P. angusta Alexander, Glen Rose Formation, west of 

 Weatherford Texas, x 52. 

 2a. Left side of a shell, U.S.N.M. 132504 

 2b. Right side of a shell, U.S.N.M. 132505 

 3a-d. Asciocythere rotunda (Vanderpool), Glen Rose Formation, west of 

 Weatherford, Texas, x 52. 

 3a. Exterior of a paratype left valve, U.S.N.M. 132506 

 3b. Right side of paratype shell, U.S.N.M. 132507 

 3c. Interior of holotype left valve, U.S.N.M. 132508 

 3d. Dorsal view of a paratype shell, U.S.N.M. 132509 

 4a-c. Asciocythere rotunda (Vanderpool), Glen Rose Formation, west of 

 Weatherford, Texas, x 52. 

 4a. Left side of a paratype shell, U.S.N.M. 132510 

 4b. Right side of a paratype shell, U.S.N.M. 132511 

 4c. Interior of paratype left valve, U.S.N.M. 132512 

 5a-f. Asciocythere perforata (Vanderpool), Glen Rose Formation, west of 

 Weatherford, Texas, x 52. 

 5a. Right side of holotype shell, U.S.N.M. 132513 

 5b. Dorsal view of paratype, U.S.N.M. 132514 

 5c. Interior of paratype right valve, U.S.N.M. 132515 

 5d. Interior of paratype left valve, U.S.N.M. 132516 

 5e. Exterior of paratype left valve, U.S.N.M. 132517 

 5f. Interior of paratype left valve, U.S.N.M. 132518 

 6a-c. Schuleridea dorsoventrus (Vanderpool), (= the holotype of "Bairdia 

 glenrosensis" Vanderpool), Glen Rose Formation, west of Weather- 

 ford, Texas, x 52. 

 6a. Right side of holotype shell, U.S.N.M. 132433 

 6b. Right side of paratype shell, U.S.N.M. 132434 

 6c. Right side of small paratype shell, U.S.N.M. 132435 

 7a, b. Schuleridea dorsoventrus (Vanderpool), Glen Rose Formation, west of 

 Weatherford, Texas, x 52. 

 7a. Right side of a paratype shell, U.S.N.M. 132436 

 7b. Exterior of a paratype right valve, U.S.N.M. 132437 



8. Cypridea dequeenensis Swain and Brown, n. sp., DeQueen Limestone at 



Gypsum Bluff, Pike County, Arkansas, x 52. 

 Exterior of holotype left valve, U.S.N.M. 132519 



9. Cypridea diminuta Vanderpool, DeQueen Limestone at Gypsum Bluff, 



Pike County, Arkansas, x 52. 

 Right side of holotype, U.S.N.M. 132523 

 10. Cypridea Wyoming 'ensis Jones, DeQueen Limestone at Gypsum Bluff, 



Pike County, Arkansas, x 52. 

 Exterior of holotype right valve, U.S.N.M. 132528 



.--, 



