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CATEGORIES:LCLU Seminars
SUMMARY:Animals\, Sediments\, Slime\, Muck and Goo:  The R
 ecord of Earth’s Early Animals and their Environme
 nts with Implications for Discovering Life Elsewhe
 re - Mary Droser\, University of California\, Rive
 rside (Department of Earth and Planetary Sciences)
 ​
DTSTART;TZID=Europe/London:20250305T160000
DTEND;TZID=Europe/London:20250305T170000
UID:TALK224110AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/224110
DESCRIPTION:Patterns of origination and evolution of early com
 plex life on this planet are interpreted largely f
 rom the fossils of the Precambrian soft-bodied Edi
 acara Biota. Excavation and reconstruction of beds
  of the Ediacara Member of the Rawnsley Quartzite 
 at the Nilpena Ediacara National Park fossil site 
 in the Flinders Ranges area of South Australia has
  exposed nearly 400 square meters of fossiliferous
  bedding planes. As a result\, the taphonomy and s
 edimentology of the succession are well-constraine
 d\, rendering it possible to disentangle ecologica
 l from environmental and taphonomic signals. The e
 xcavation and reconstruction of beds at Nilpena yi
 elds an exceptional and unique opportunity to exam
 ine not only the taxonomic composition of Ediacara
  communities but also their ecological character a
 t various stages of development and the nature of 
 the complex and diverse organic mat structures.  P
 reserved ecological ‘snapshots’ of fossil assembla
 ges range from immature communities of small-bodie
 d individuals\, associated with poorly developed o
 rganic mats to communities characterized by a high
  diversity of macrofaunal taxa\, wide range of bod
 y sizes and the presence of dense textured organic
  surfaces.  Animals of the Ediacara Biota had an i
 ntimate relationship with the organic mats which a
 cted as a food source for early motile organisms a
 nd as a place of attachment for sessile organisms 
 living in high energy conditions.  Mapping of foss
 il beds has revealed ecological interactions such 
 as self-thinning and commensalism as well as new b
 ody plan - most recently\, the oldest ecdysozoan a
 nd evidence of chirality.  Together with data from
  other fossil sites around the world\,  it is very
  clear that the dawn and early evolution of the an
 imal life is recorded in the Ediacaran Period. \n\
 n
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
CONTACT:Selen Etingü
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