New Fossil Evidence on the Sister-Group of Mammals and Early Mesozoic Faunal Distributions

Details New Fossil Evidence on the Sister-Group of Mammals and Early Mesozoic Faunal Distributions New Fossil Evidence on the Sister-Group of Mammals and Early Mesozoic Faunal Distributions

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991sci...251.1063s&link_type=abstract

Science, Volume 251, Issue 4997, pp. 1063-1065

Other

3

Scientific paper

Newly discovered remains of highly advanced mammal-like reptiles (Cynodontia: Tritheledontidae) from the Early Jurassic of Nova Scotia, Canada, have revealed that aspects of the characteristic mammalian occlusal pattern are primitive. Mammals and tritheledontids share an homologous pattern of occlusion that is not seen in other cynodonts. The new tritheledontids represent the first definite record of this family from North America. The extreme similarity of North American and African tritheledontids supports the hypothesis that the global distribution of terrestrial tetrapods was homogeneous in the Early Jurassic. This Early Jurassic cosmopolitanism represents the continuation of a trend toward increased global homogeneity among terrestrial tetrapod communities that began in the late Paleozoic.

Affiliated with

Also associated with

No associations

Rating

New Fossil Evidence on the Sister-Group of Mammals and Early Mesozoic Faunal Distributions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with New Fossil Evidence on the Sister-Group of Mammals and Early Mesozoic Faunal Distributions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Fossil Evidence on the Sister-Group of Mammals and Early Mesozoic Faunal Distributions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-939057