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Vertebrate Zoology

Placoderms (Extinct: First Gnathostomes)

QuestionAnswer
Time Period of Placoderms Silurian and Devonian
Characteristics of Placoderms Notochord; Carapce and dermal bone; Jaws; Cartilage; Bony plates for teeth; Yolk sac and embryo; Benthic
Examples: Dunkleosteus, largest Devonian predators; Materpiscis attenboroughi, embryo with yolk sac and umbilical cord, viviparity
Created by: LionsandGiants
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