Peer-reviewed veterinary case report
Cynodont Reptile with Incipient Mammalian Jaw Articulation
- Journal:
- Science
- Year:
- 1969
- Authors:
- Romer, Alfred Sherwood
- Affiliation:
- Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts · United States
- Species:
- reptile
Abstract
A diagnostic mammalian character is jaw articulation between squamosal and dentary bones, replacing the quadrate-articular joint of reptiles. A newly discovered Argentinian Middle Triassic form shows, for the first time in an ancestral reptile, definite evidence of a squamosal-dentary articulation supplementary to the persistent primitive connection.
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Search related cases →Original publication: https://doi.org/10.1126/science.166.3907.881