Mystery Fossil

[Monty Grover <grover@xxxxxxxxxxxxx>]

Just to change the topic completely, we have found an imprint of a fossil
dating from between Devonian to Cretaceous in age (I know, that is a
massive amount of time) and most likely Cretaceous in age which we have not
been able to identify. 

The attached image is at a scale of 1:1 and it occurred in a fine siliceous
sandstone from the North of Northern Territory, Australia, in a kimberlite
region.

Any suggestions as to order, genus and/or species would be gratefully
accepted. Answers can be posted here, or sent to me personally if you don't
like airing your "guesses" out in the open

Thanks in advance

Monty

UNKNOWN.TIF