Dear Annelidans,
Not a fossil-man myself but I thought this particluar beast looked extremely
like the many Chaetozone sp. (Cirratulidae) tail fragments I have sorted
through from deep-sea samples - and of course those present in shallow
water. Particularly striking are the cinctures of alternating size acicular
spines in the posterior region just as in Chaetozone setosa...
Anyone more qualified than me prepared to comment on this? Of course
the calcareous plates on the dorsal surface are not very cirratulid like I
guess....! They say it is definitly not a polychaete.
Reference below.
best wishes, Adrian
An exceptionally preserved vermiform mollusc from the Silurian of England
Mark D. Sutton, Derek E. G. Briggs, David J. Siveter, Derek J. Siveter
Studies of the origin and radiation of the molluscs have yet to resolve many
issues regarding their nearest relatives, phylogeny and ancestral
characters. The Polyplacophora (chitons) and the Aplac... Nature 410, 461
- 463 (22 March 2001)
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____________________________________
Dr Adrian Glover
Department of Oceanography
University of Hawaii
1000 Pope Road
Honolulu, Hawaii 96822, USA.
____________________________________
808-956-3310 (Lab)
808-956-8779 (Office)
____________________________________
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