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Science 8 August 1980:
Vol. 209. no. 4457, pp. 697 - 699
DOI: 10.1126/science.209.4457.697
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Articles

Viviparity and Intrauterine Feeding in a New Holocephalan Fish from the Lower Carboniferous of Montana

RICHARD LUND 1

1 Department of Biology, Adelphi University, Garden City, New York 11530

A new species of Lower Carboniferous holocephalan chondrichthyan, Delphyodontos dacriformes, is described from two fetal specimens. The well-developed slashing and piercing dentition, enlargement of the abdominal region, and fecal material indicate the probable evolution of intrauterine oophagy and viviparity in Paleozoic Chondrichthyes.

Submitted on March 14, 1980
Revised on May 19, 1980

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Science. ISSN 0036-8075 (print), 1095-9203 (online)