Explanation of Plate 2 



(The dorsum and right valve of each specimen shown, except as noted) 



Figs. 1-2 Bairdia insolens Cooper, n. sp. Holotype, x20. Renault formation, loc. 12 . . . p. 26 



3-4 Bairdia cf. suhelongata Jones and Kirkby. x20. Golconda formation, loc. 19 . . . p. 26 



5-6 Bairdia suhtila Cooper, n. sp. Holotype, x20. Kinkaid formation, loc. 3 .... p. 26 



7-8 Bairdia impendere Cooper, n. sp. Holotype, x20. Renault formation, loc. 14 . . p. 26 



9-10 Bairdia renaultensis Croneis and Gutke, x20. Renault formation, loc. 25 



11-12 Bairdia sinuosa Cooper, n. sp. Holotype, x30. Kinkaid formation, loc. 5 . . . . p. 26 



13-14 Bairdia osorioi Croneis and Gale, x20. Golconda formation, loc. 8 



15-16 Bairdiolites hremrostris Cxone\% 2indT\i\ixm2in. x30. Kinkaid formation, loc. 5 . . p. 26 



17-18 Bairdia mccoyi Croneis and Gutke, x20. Glen Dean formation, loc. 1 



19-20 Bairdiolites hulhosus Cront'is, 2indBr\s>to\,y.'?)Q. Menard formation, loc. 20 . . . . p. 27 



21-22 Bairdiolites ovatus Croneis and Funkhouser, x30. Kinkaid formation, loc. 5 . . . p. 27 



23-24 Bairdiolites elongatus Croneis and Funkhouser, x30. Kinkaid formation, loc. 5 



25-26 Bairdiolites crescentis Croneis and Gale, x30. Golconda formation, loc. 17 



27-28 Bairdiolites fornicatus Cooper, n. sp. Holotype, x30. Menard formation, loc. 15 . p. 27 



29-30 Bairdiolites crassus Cooper, n. sp. Holotype, x30. Clore formation, loc. 28 . . . p. 27 



31-32 Beyrichiopsis hrynhildae Coryell and Johnson. Dorsum and left valve, x30. Clore 

 formation, loc. 27 



33-34 Beyrichiopsis thori Coryell and Johnson. Dorsum and left valve, x30. Clore forma- 

 tion, loc. 27 



35-36 Bythocypris amsdenensis Morey, x40. Fayetteville shale, loc. 31 p. 28 



37-38 Bairdiolites tenuis Cooper, n. sp. Holotype, x30. Renault formation, loc. 13 . . . p. 27 



39-40 Bairdiolites procerus Cooper, n. sp. Holotype, x30. Kinkaid formation, loc. 6 . . . p. 27 



41-42 Bairdiolites vulgaris Cooper, n. sp. Holotype, x30. Paint Creek formation, loc. 2 . . p. 28 



43-44 Bairdiolites platypleurus Croneis and Gale, x30. Renault formation, loc. 25 



71 



