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RE: Were dinosaur ecosystems continent-sized? (resend)
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> On Behalf Of firstname.lastname@example.org
> Sent: Monday, April 26, 2010 1:39 AM
> To: dinosaur
> Subject: Re: Were dinosaur ecosystems continent-sized? (resend)
> Hmm, I had thought that the lumping of _Anatotitan_ with
> _Edmontosaurus_ was fairly accepted; am I out of date? Has
> that changed again?
Yes, kind of.
On-going work by Nick Campione and others shows the Campanian form
(Edmontosaurus regalis) is morphologically distinct from the late
Maastrichtian form(s), which may represent two closely-related species
(Anatosaurus annectens and Anatotitan copei), or just one (of which
annectens has priority).
Taxonomically, one could use a single genus for the whole shebang; or one
could use Anatosaurus for the Lancian ones, or (if copei is deemed
sufficiently distinct to be considered a separate species) you could have
Edmontosaurus, Anatosaurus, and Anatotitan all.
> ----- Original Message -----
> From: "GUY LEAHY" <email@example.com>
> Now that I have read the data set... :-)
> There's one more possible error... _Albertosaurus_ listed
> from the Scollard.
> The list also suffers a bit from the usual lumper-splitter
> arguments; _Nanotyrannus_ is listed separately from
> _Tyrannosaurus_, while _Anatotitan_ is lumped with _Edmontosaurus_.
Thomas R. Holtz, Jr.
Email: firstname.lastname@example.org Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Earth, Life & Time Program, College Park Scholars
Faculty Director, Science & Global Change Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA