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Re: A Whole Bunch Of Questions
Dino Rampage wrote:
Hi everyone, here's another whole bunch of questions that've been nagging
at my subconscious for the past week or so. Here goes:
1) What is the status of the Euhelopodidae? Is it considered basal to the
Neosauropoda? And are Euhelopus, Omeisaurus & Mamenchisaurus still
considered a monophyletic clade? Would Shunosaurus be considered closely
related to, or part of Euhelopodidae?
2) Is Tarascosaurus salluvicus considered an abelisaur?
3) Among the 3 Late Cretaceous European sauropods, Ampelosaurus,
Hypselosaurus & Magyarosaurus, which are known to have possessed armour?
4) What's the general consensus of the number of species of Torosaurus &
Triceratops: Are there 2 species in each genus, or just 1?
Two Triceratops species are recognizd by Forster: T. horridus and T.
5) How does Styracosaurus ovatus differ from S. albertensis?
6) What is the youngest age for Saurolophus?
IIRC Eberth indicated that Saurolophus is known from units 3 and 4 of the
Horseshoe Canyon. It definitely was present in the early and mid
Maastrichtian of North America but is unknown from the Lancian; there is no
evidence for its survival to the K-T. I agree with Jerzykiewicz and Russell
that the best estimate for the age of the Nemegt, which also yields
Saurolophus, is c mid Maastrichtian. It probably persisted into the early
late Maastrichtian on both continents but not to the end.
Did Saurolophus survive
until the K-T?
7) Did Charonosaurus really look like a giant Parasaurolophus?
Hard to say, inasmuch as Charonosaurus specimens lack complete, intact
8) What species of Goniopholis is known from the Late Jurassic of North
9) Just how many species of phytosaur are known from the late Triassic of
North America? I know a great number of them were referred to Rutiodon, but
now we have a whole bunch such as Paleorhinus, Nicrosaurus, Pseudopalatus,
Leptosuchus, Angistorhinus & Smilosuchus in addition to Rutiodon. Can
anyone provide me a clear picture as to how these different phytosaurs
differed from each other?
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