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Pararhabdodon (was Re: MAASTRICHT CONFERENCE PT. 2)
> Unfortunately this talk doesn't seem to have happened. Shame because
> they refer to new skull material of _Pararhabdodon_ which proves that
> it is a hadrosaurid, and not a basal iguanodontian as originally
... and thus exemplifying one of the potential pifalls of naming new genera
simply by tacking things like "Para-" or "Proto-" or "-oides" onto existing
names. _Protarchaeopteryx_, _Parasaurolophus_, _Protiguanodon_,
_Dryptosauroides_ .... I guess they seemed like a good idea at the
time, but all these names now look increasingly inappropriate.
(Thank the gods _Protorosaurus_ bit the dust!)
Come on! Let's tax our imaginations a little when christening our
new discoveries. ;-)
> Perhaps the best talk was Mark Goodwin's on UCMP 15442, a baby
> _Triceratops_ skull discovered by Garbani in the Hell Creek Fm,
> Montana. It's the smallest ceratopid skull yet found, and has huge
> orbits and a frill about the same length as the face. Parietal and
> squamosal borders are strongly scalloped and Mark had a lot to say
> about the ontogeny of 'epocippitals': a complex story that I can't do
> justice here. He bought along a cast of the skull (much of the face
> is restored).
> There were three pterosaur talks. Andre Veldmeijer spoke about the
> Leiden specimen of _Coloborhynchus_ and argued that _Tropeognathus_
> and _Criorhynchus_ can be sunk into this genus. I do not agree (it's
> more complicated than that), but I can see that the taxonomic
> situation with _Anhanguera_, _Tropeognathus_,
> Criorhynchus_,_Coloborhynchus_ and perhaps _Arthurdactylus_ really is
> a mess. Lorna Steel reviewed pterosaur head crests and the
> functions that have been proposed for them. Basically they
> are so varied that she concluded (1) pterosaur head crests vary a
> great deal and (2) they probably had different functions.
> David Martill gave a talk on a smallish pterosaur from the Santana,
> represented only by a wing. It has some azhdarchid characters (e.g.
> T-shaped cross section of wing phalanges) and thus might be one - if
> so it is the earliest (Santana Fm is probably Aptian) and also the
> first from the Southern Hemisphere. So.. did azhdarchids originate in
> the Southern Hemisphere?
> **MARINE REPTILES**
> You can't go to Maastricht and not see mosasaur fossils. Their museum
> has some fantastic ones, including a replica of the original
> _Mosasaurus hoffmanni_ jaws and a full-size 3-D swimming skeleton of
> the whole thing.
> In the talks, Eric Mulder showed that _M. hoffmanni_ Mantell 1829
> probably is the same as _M. maximus_ Cope 1869. Lingham-Soliar's
> arguments to the contrary were shown to be erroneous. Eric also
> talked about thoracosaurine crocs and turtles common to both the
> Maastrichtian of New Jersey (USA) and Europe.
> Natalie Bardet was talking about the history of _M. hoffmanni_ -
> unfortunately I missed this as I had to leave early. I also missed
> Ella Hoch's talk on whale evolution: shame as this is one of my
> favourite subjects. Stephane Hua presented a poster about
> dyrosaurids, a group of crocs that survived from the Cretaceous into
> the Eocene. I do not agree with her that the evolution of
> archaeocetes in the Eocene resulted in dyrosaurid extinction.
> Don't worry, I'll keep it brief. Pascal Godefroit spoke about teeny
> tiny dwarf traversodonts known from the Late Triassic of Lorraine and
> Luxembourg. Basically, traversodonts started out small and some got
> big. Some became huge (he showed a slide of a S. American one with a
> skull about 30 cm long), other stayed tiny - then, bang, mass
> extinction and only the tiny ones are left. These compete with
> mammals and are not lucky enough to get a break.
> Jan van der Made talked about the evolution of suoids, and then again
> on big-antlered cervids like _Eucladoceros_. Hooray for Mauricio
> Anton paintings! Suoids originated in Asia, but when they got into
> Africa (during the 'Proboscidea Event') things get really complicated
> because thereafter they speciate massively and hop back and forth all
> the time. Jan used the name Dicotylidae for peccaries - we usually
> see Tayassuidae in most texts but, as I suspected, he said
> Dicotylidae has priority.
> **MESOZOIC FAUNAS**
> Briefly (because my train is due in 10 minutes), Igor Novikov
> reported new Mesozoic Russian fossil sites. Peski, a Bathonian site
> near Moscow, yielded a dromaeosaurid tooth. Shestakovo in South
> Siberia, possibly Berriasian, yielded psittacosaurs, troodontids and
> titanosaurids and two protosuchians - _Sichuanosuchus_ and a new
> genus. This assemblage is apparently the 'most ancient amongst
> _Psittacosaurus_ faunas known to date'.
> Eric Buffetaut presented new stuff from the Khorat Plateau,
> northeastern Thailand. The Sao Khua Fm, previously argued to be
> latest Jurassic, is now thought to be Early Cretaceous. This would
> mean no Jurassic dinosaurs from Thailand, but they have now got the
> Phu Kradung Fm, which they do think is Jurassic. Yields indeterminate
> theropods, possible euhelopodids (spoon-shaped teeth), a STEGOSAUR
> and a little ornithopod maybe like _Yandusaurus_. For some reason
> Buffetaut et al. are saying that _Phuwiangosaurus_ is a 'probable
> nemegtosaurid'. By this time in the conference I felt I'd asked
> enough questions and didn't query this. Dr. Buffetaut also showed a
> slide of some bizarre unidentified ?archosaur snout which had
> slightly spatulate teeth with carinae, no serrations, and marked wear
> facets. Looked like nothing else ever seen: heterodontosaurid and
> aberrant theropod were suggested as identities.
> And finally, Dan Grigorescu spoke about new work he and colleagues
> have done on the microvertebrate fauna in the late Maastrichtian
> sites of the Hateg Basin. Discoglossid frogs turn out to be quite
> abundant, and there are also albanerpetontids, little lizards,
> MTBs, crocs and various fishy things like sturgeons and characids.
> Dinosaurs are represented by teeth of various indeterminate
> theropods, titanosaurids, iguanodontids (?? in the late
> Maastrichtian??) and hypsilophodonts, plus lots of eggshell bits at
> some of the localities. These indicate hadrosaurid nesting colonies.
> Right, tha--tha-tha-that's all folks! I missed my train.
> "An uninformed opinion is a dangerous thing"
> DARREN NAISH