Archive image from page 134 of The Cyathaspididae; a family of. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates cyathaspididaefa135deni Year: 1964 DENISON: THE CYATHASPIDIDAE 437 Fig. 153. Allocryptaspis utahensis, ventral view of anterior part of type (from Denison, 1953); dorsal shield, CNHM, PF 737 (X 1). brn, position of notch bounding branchial opening; 11, lateral lamina; or, orbit. Allocryptaspis flabelliformis (Bryant) Cryptaspis flabelliformis Bryant 1935, Proc. Amer. Phil. Soc, 75, pp. 118-119, 'pi. 7. Allocryptaspis flabelliformis Denison 1953, Fieldia
Archive image from page 134 of The Cyathaspididae; a family of. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates cyathaspididaefa135deni Year: 1964 DENISON: THE CYATHASPIDIDAE 437 Fig. 153. Allocryptaspis utahensis, ventral view of anterior part of type (from Denison, 1953); dorsal shield, CNHM, PF 737 (X 1). brn, position of notch bounding branchial opening; 11, lateral lamina; or, orbit. Allocryptaspis flabelliformis (Bryant) Cryptaspis flabelliformis Bryant 1935, Proc. Amer. Phil. Soc, 75, pp. 118-119, 'pi. 7. Allocryptaspis flabelliformis Denison 1953, Fieldiana: Geol., 11, no. 7, pp. 296- 299, 304; 1960, Fieldiana: Geol. 11, no. 10, p. 556. Type.—Princeton 13888, a ventral shield. Occurrence.—Early Devonian, Beartooth Butte formation, Bear- tooth Butte, Park County, Wyoming. Diagnosis.—The length of the ventral shield is about 100 mm., and it is relatively broad. There are about 4 dentine ridges per mm. Discussion.—This is a poorly characterized species, distinguished by its large size. Allocryptaspis laticostata Denison. Figures 92, 95, 96, 98,E, 99,D, 102,C, 104, 152, 159,B. Allocryptaspis laticostatus Denison, 1960, Fieldiana: Geol., 11, no. 10, pp. 555- 567, figs. 117-123. Type.—CNHM, PF 1701, a dorsal shield (Denison, 1960, fig. 117,A).
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