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RE: Juramaia, Jurassic eutherian from China
> -----Original Message-----
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> On Behalf Of email@example.com
> Sent: Wednesday, August 24, 2011 6:00 AM
> To: firstname.lastname@example.org
> Subject: Juramaia, Jurassic eutherian from China
> A Mesozoic mammal of interest:
> Zhe-Xi Luo, Chong-Xi Yuan, Qing-Jin Meng & Qiang Ji (2011)
> Jurassic eutherian mammal and divergence of marsupials and placentals.
> Nature 476: 442-445
> Placentals are the most abundant mammals that have
> diversified into every niche for vertebrates and dominated
> the world's terrestrial biotas in the Cenozoic.
> A critical event in mammalian history is the divergence of
> eutherians, the clade inclusive of all living placentals,
> from the metatherian-marsupial clade. Here we report the
> discovery of a new eutherian of 160 Myr from the
> Jurassic of China, which extends the first appearance of the
> eutherian-placental clade by about 35 Myr from the
> previous record, reducing and resolving a discrepancy between
> the previous fossil record and the molecular estimate for the
> placental-marsupial divergence. This mammal has scansorial
> forelimb features, and provides the ancestral condition for
> dental and other anatomical features of eutherians.
> News Stories:
And now I have to update the webnotes for class... :-)
Thomas R. Holtz, Jr.
Email: email@example.com Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Science & Global Change Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA