Pectoral morphology in Doliodus : bridging the 'acanthodian'-chondrichthyan divide

Related Titles

Series: American Museum novitates, number 3875

By

Maisey, John G. , author

Miller, Randall F. (Randall Francis), 1956- , author
Pradel, Alan , author
Denton, John S. S. , author
Bronson, Allison , author
Janvier, Philippe , author

Type

Book

Material

Published material

Publication info

New York, NY American Museum of Natural History [2017]

Notes

Caption title.

"March 10, 2017."

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Doliodus problematicus (NBMG 10127), from the Lower Devonian of New Brunswick, Canada (approx. 397-400 Mya) is the earliest sharklike jawed vertebrate (gnathostome) in which the pectoral girdle and fins are well preserved. Its pectoral endoskeleton included sharklike expanded paired coracoids, but Doliodus also possessed an "acanthodian-like" array of dermal spines, described here for the first time. Doliodus provides the strongest anatomical evidence to date that chondrichthyans arose from "acanthodian" fishes by exhibiting an anatomical mosaic of "acanthodian" and sharklike features.

Subjects

Chondrichthyes , Chondrichthyes, Fossil , Devonian , Doliodus problematicus , Evolution , Fishes , Fishes, Fossil , New Brunswick , Paleontology , Phylogeny , Shoulder girdle , Spines (Zoology)

Call Number

QL1 .A436 no.3875 2017

Language

English

Identifiers

DOI: https://doi.org/10.1206/3875.1
OCLC: 974929983