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Re: the importance of Qianosuchus
Thanks to Tim for catching the persistent typos on the Hairy Museum
writeup--it's more than a bit embarrassing to find out that I had
misspelled the name for so long. I'll get the text corrected straight
away, the name in the image will take a little longer.
I appreciate David's compliment about my line drawing, but I should
caution against using my rough skeletal reconstruction to draw any
detailed conclusions. While I strove to be as accurate as possible, it
really is just the result of a few hours of tracing the bones from the
photographs in the original paper and rearranging them in a
somewhat-lifelike pose. It was intended primarily to show what is known
and get across the proportions of the animal.
The photographs in the original description are quite good; I'd
recommend those to anyone interested in the finer points of the
anatomy of Qianosuchus. If anyone is interested in looking more closely
at or modifying my reconstruction, I'd be happy to pass along my
Illustrator file (after the long weekend).
The Hairy Museum of Natural History
On Aug 30, 2007, at 11:34 PM, Tim Williams wrote:
David Peters wrote:
I ran across* Quianosuchus yesterday at the Hairy Museum of
Paleontology and wondered what it was and why nobody had ever
mentioned it before on the dino list.
They did. Search the DML archives for "_Qianosuchus_". This is one
situation where correct spelling is important (Qianosauchus vs
_Qianosuchus_ (Middle Triassic) is an interesting critter in its own
right, as it represents the earliest known archosaur (or
archosauriform) that shows evidence of an amphibious lifestyle.
_Qianosuchus_ might have had a lifestyle similar to modern saltwater
crocodiles ("salties" as they're affectionately known). The authors
who described it (Li et al., 2006; Naturwissenschaften 93:200-206) put
it in the Crurotarsi - in other words, on the line leading to crocs,
not the line that led to dinosaurs/birds.
With Quianosuchus, the lineage leading toward dinosaurs has just
gotten bushier. And its nice to know that none of the metatarsals are
reduced in diameter. That little fact has big implications for
Irmis's so-called "dinosauromorphs."
Oh... hang on. Are you constructing phylogenies based solely on "key
characters". Shame on you, Mr Peters! Tsk tsk.
Whatever it is you're imbibing, it's powerful stuff!
A new home for Mom, no cleanup required. All starts here.