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SUMMARY:Rock records: when two are better than one - Andrew B. Smith\, Dep
 artment of Palaeontology\, Natural History Museum
DTSTART:20101109T163000Z
DTEND:20101109T173000Z
UID:TALK26150@talks.cam.ac.uk
CONTACT:John Maclennan
DESCRIPTION:A correlation exists between the quality of the rock record pa
 laeontologists have to sample on land and the diversity of fossils recorde
 d from that rock record. However\, whether this arises as a direct effect 
 of sampling bias or because a third factor (sea-level change) has driven b
 oth in parallel remains the subject of much debate.  The rock record in th
 e deep ocean basins has accumulated under a different set of biases to tha
 t on land and thus provides a simple way of testing the two competing hypo
 theses.  By comparing the diversity of a widespread group of marine microp
 lankton (coccolithophorids) recovered from land and deep-sea rock records 
 it is possible to establish the strength of the rock record bias and to th
 en discover the underlying biological signal common to both.
LOCATION:Tilley Lecture Theater\, Department of Earth Sciences
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