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Re: LATE SURVIVING CYNODONT (lenghty and boring)
In a message dated 97-06-16 05:53:20 EDT, Pieter.Depuydt@rug.ac.be writes:
> Very right. The stapes we mammals inherited from our pre-Synapsid amniote
> ancestor since this small bone is also present in extant [reptiles],
> lizards and birds.
Do I remember correctly that the stapes is derived from the hyomandibular of
fishes, the upper half of the ancestral second gill arch (the lower half of
which has become the hyoid apparatus)?