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Re: Where have all the ornithischians gone?
Previously I had written:
"[D]orsals bearing their parapophyseal pedicles below the dorsal margin of the
anterior face of the centrum (as well as the posterior face), a femur and
scapula of the same length, a distal scapula craniocaudally broader in diameter
than the proximal end and a posterolaterally-oriented glenoid, which all
indicate a largely semi-sprawled quadrupedal static posture."
I should also mention one rather unambiguous feature in the skull of
*Lotosaurus* for which I am probably not very too familiar, but which is very
distinctive: a postfrontal. Additionally, the jugal has a rostral ascending
ramus butressing the lachrymal, which is broadly triangular and does not form
distinctive processes. This cranial complex is rather unlike dinosaurs and is
found in non-dinosaurian archosaurs. Indeed, all basal dinosaurs, aqnd
*Silesaurus* lack a postfrontal.
Cheers,
Jaime A. Headden
Little steps are often the hardest to take. We are too used to making leaps
in the face of adversity, that a simple skip is so hard to do. We should all
learn to walk soft, walk small, see the world around us rather than zoom by it.
"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)
"Human beings, who are almost unique in having the ability to learn from the
experience of others, are also remarkable for their apparent disinclination to
do so." --- Douglas Adams
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