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seminar on fossil preservation (forwarded)



From:   MX%"map2@leicester.ac.uk" 11-MAR-1996 07:12:04.50
To:     MX%"DDDNET@UICVM.UIC.EDU"
Subj:   REVIEW SEMINAR

Message-ID: <94A9D849B0@mango.le.ac.uk>
Date: Mon, 11 Mar 1996 13:21:23 +0100
Reply-To: map2@leicester.ac.uk
Sender: Taphonomy and Other Fossil Preservation Issues <DDDNET@UICVM.UIC.EDU>
From: Palaeontological Association <map2@LEICESTER.AC.UK>
Subject: REVIEW SEMINAR
Comments: To: PaleoNet@ucmp1.berkeley.edu, micropal@ucmp1.berkeley.edu,
    vrtpaleo@usc.edu
To: Multiple recipients of list DDDNET <DDDNET@UICVM.UIC.EDU>

PALAEONTOLOGICAL ASSOCIATION REVIEW SEMINAR

Exceptional preservation of fossils: processes and perspectives
University of Portsmouth, UK
Wednesday 20 March 1996

The most spectacular fossils are those in which soft tissues are
preserved in addition to mineralized hard parts. Such fossils provide
considerably more palaeobiological data than do conventional
preservational modes. For many organisms known by hard parts alone,
their evolutionary relationships, indeed, even their basic shape, has
been an enigma. However, throughout the Phanerozoic, rare
preservational windows in which fossils with soft tissues occur, allow
us to evaluate more accurately the nature of extinct biotas.

The last ten years have seen marked advances in studies on the
preservation of fossil soft tissues, with such studies concentrated in
three main areas: 1) the taphonomic processes leading to the burial of
intact carcasses; 2) the diagenetic processes that ultimately preserve
non-mineralized tissue in the long term; and 3) actualistic studies on
fresh materials to determine rates of decay and processes of
fossilization. In parallel with these studies others have concentrated
their efforts on the palaeobiology, physiology and evolutionary
relationships of ancient organisms as revealed by the preserved soft
tissues. This seminar aims to bring together these distinct, but
nevertheless related strands in a one-day forum for all
palaeontologists. Topics include the preservation of soft tissues by
mineral replacement and replication, the in-situ preservation of
organic molecules, rates of fossilization, and the palaeobiology of
extinct organisms revealed by soft tissues.

Organizers: Dave Martill & Mike Barker, Department of Geology, University of
Portsmouth, Burnaby Road, Portsmouth PO1 3QL
Tel: 01705 842256 or 842245, Fax: 01705 842244
e-mail: Martilld@geol.port.ac.uk or Barkerm@geol.port.ac.uk

Venue: Department of Geology, University of Portsmouth, Burnaby Road, Portsmouth
PO1 3QL (maps available from the organizsers on request)

Programme

10.00 Coffee
10.30 Welcome by Steve Donovan (Visiting Professor)
10.35 Introduction by Dave Martill

Theme 1. Preservation of soft tissues

11.00 Dr Peter Allison Soft and Dead
11.30 Prof Derek Briggs Actualistic approaches to soft tissue preservation
12.00 Dr Phil Wilby Phosphatization of soft tissues
12.30 Ms Sarah Gabbott Soft tissue preservation by clay minerals

1.00 Lunch

Theme 2. Exceptional preservation of extinct organisms

2.30 Dr Richard J. Aldridge Soft tissue evidence: the conodont detective story
3.00 Dr David Unwin The soft tissue preservation in pterosaurs
3.30 Dr Dave Martill Exceptional preservation of ichthyosaurs
4.00 Dr Mike Barker Closing remarks
  ______________________________________________________________
 *                                                              *
 *  This seminar is free.                                       *
 *  All Palaeontological Association Meetings are open to all,  *
 *  including non-members of the Palaeontological Association.  *
 *                                                              *
 *  Details of forthcoming meetings are available on the        *
 *  Palaeontological Association www pages at                   *
 *  http://www.nhm.ac.uk/paleonet/PalAss/PalAss.html            *
 *______________________________________________________________*

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bonnie Blackwell,                               bonn@qcvaxa.acc.qc.edu
Dept of Geology,                                (718) 997-3332
Queens College, City University of New York,    fax:  997-3349
Flushing, NY 11367-1597