Hello all,

Thank you for establishing this group and allowing me to join.

I am working on a description of Palaeoxyris specimens from the Triassic of North America.
There has been a long standing controversy as to the affinites of this fossil. Some argue plant
and others beleive they are some kind of shark egg cases. It seems that the material I am
working on may be the only Mesozoic occurences in North America. The only other Mesozoic
species I know of are P. regularis P. muensteri, and P. duris all from Europe and Asia.

I was wondering if anyone in the group knows of any other Mesozoic occurences other than
the questionable Cretaceous species P. jugleri.

Also, does anyone in the group have any strong opinions one way or the other regarding the
affinities of Palaeoxyris? I would like to hear about them.

Thanks in advance





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