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Re: Therizinosauria Cladogram
In a message dated 1/11/02 11:14:37 PM EST, email@example.com writes:
<< "Therizinosaurs include six described genera (_Alxasaurus_,
_Enigmosaurus_, _Erlikosaurus_, _Nashiungosaurus_ [sic], _Segnosaurus_,
and _Therizinosaurus_) of bipedal theropods ... Therezinosaurs [sic] may
be described as the aforementioned taxa and all others closer to them than
to oviraptorosaurs, ornithomimids, and troodontids."
Could have been a bit better worded, maybe, but it's still a phylogenetic
definition. None exist for Segnosauria. >>
Sigh--One of these days I'll just have to trawl that encyclopedia for new
taxonomic names. Dale doesn't just use the name Therizinosauria, it's the
>title< of his article!
Anyway, please note that in the first sentence Dale implicitly synonymizes
Therizinosauria with Segnosauria when he opens with, "Until recently, little
was known about therizinosaurs (segnosaurs)." So, for example, you may
substitute "segnosaurs" for "therizinosaurs" everywhere in the article.
Indeed, he could (and should) have done that very thing himself when he wrote
the article, instead of creating the extraneous new name Therizinosauria for
the taxon Segnosauria.
It's like something out of The Twilight Zone. "Segnosauria? What's
Segnosauria? There's no such thing as Segnosauria."