Aquatic Triassic reptiles

[wowo@xxxxxxxxxxxx (Wolfgang Schatz & David Cook)]

Dear All

I am working on ichthyosaurs. In the caudal region the centra have very
good developed diapophsis but the ribs seem to be missing.
The question is: Is it possible that good developed diapophsysis are
present on the centras without development of ribs?

                        Waiting for answers David

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