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Ok, the Purbeck special volume [or at least some of it]
obviously IS out and constitutes a special issue of
_Cretaceous Research_. Ben previously cited two of the
papers from this issue (Rauhut on theropod teeth [not
Purbeck] and Barrett and Evans on _Patricosaurus_). Have
just seen the following...
Barrett, P. M., Clarke, J. B., Brinkman, D. B., Chapman, S.
D. & Ensom, P. C. 2002. Morphology, histology and
identification of the 'granicones' from the Purbeck
Limestone Formation (Lower Cretaceous: Berriasian) of
Dorset, southern England. _Cret. Res._ 23, 279-295.
This is a fabulously detailed paper that thorougly reviews
all the possible identifications for the granicones; also loads
of detail on their structure and histology. And what are the
granicones? They are the limb (or possibly tail) osteoderms
of turtles, as demonstrated by similar structures on the limbs
of the solemydids_Naomichelys_ (from Aptian-Albian
Texas) and _Solemys_ (from Late K France). The Purbeck
form - the granicones may be referable to either
_Helochelydra anglica_ or _'Tretosternon' bakewelli_ - may
thus be another solemydid. Incidentally Barrett et al. note
(in the acknowledgements) Angela Milner's offhand
suggestion that the structures were 'turtle knee-pads'.
There are surely other papers in that issue of _Cret. Res._ of
interest to this list but I haven't yet seen them cited.
Hopefully Milner on _Nuthetes_ and Norman on
_Iguanodon hoggi_ are in there.
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