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SUMMARY:African roots of the dinosaur family tree - Paul Barrett - Natural
  History Museum
DTSTART:20231127T180000Z
DTEND:20231127T190000Z
UID:TALK207307@talks.cam.ac.uk
CONTACT:Lucas Measures
DESCRIPTION:Non-avian dinosaurs are some of the most intensively studied o
 f all extinct animals\, but the origin of the group remains contentious. T
 he discoveries of dinosaur 'precursors' and early dinosaurs in Argentina a
 nd Brazil have led to a consensus that dinosaurs originated in South Ameri
 ca during the early part of the Late Triassic\, around 235 million years a
 go. However\, this conclusion might be the result of biased sampling\, as 
 few Middle and early Late Triassic dinosaur sites are known from anywhere 
 else. New study of historically collected specimens and additional fieldwo
 rk in southern and eastern Africa are now starting to add more information
  to this debate and have the potential to re-write the narrative on dinosa
 ur origins. The picture currently emerging from South Africa\, Tanzania\, 
 Zimbabwe and Zambia suggests that early dinosaurs and their ancestors were
  more geographically widespread than recognised previously and the origin 
 of dinosaurs was rapid\, followed by a slow rise to ecological dominance.
LOCATION: Harker 1\, Department of Earth Sciences\, Downing Street
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