Echinochimaera snyderi

The second species of the genus Echinochimaera differs from E. meltoni in jaw shape, the presence of an anterior upper tooth family rather than a tooth plate, and details of the first dorsal, pelvic, and anal fins. The specimen illustrated was an immature male (the scale bar is 1 cm). A mature male collected after the published descriptions is considerably larger than the male of E. meltoni.

Reference:

• Lund, R. 1988. New Mississippian Holocephali (Chondrichthyes) and the evolution of the Holocephali. In Teeth Revisited: Proceedings of the VII Int. Symp. on Dental Morph., Paris, May 1986, Russell, D. E., Santoro, J. P. and Sigogneau‑Russell, D., Eds., Mem. Mus. Natn. Hist. Nat., Paris, (serie C) 53:195‑205.

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