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MOSASAURS, DWARF SAUROPODS ETC.
Haven't got much time, so I'm not sure how much of this I'll get
through. The special volume of _Geologie en Mijnbouw_ (Vol. 78,
1999) is out: includes the proceedings of the Third European Workshop
on Vertebrate Paleontology (Maastricht 6-9th May 1998). Haven't had
time to check this, but the journal is available online at
http://www.kluweronline.nl They also provide the site
http://www.wkap.nl - don't know which is right.
Volume includes papers on fish, one on mammals (musk oxen) and a
tribute to the late great Colin Patterson. Other than that everything
is Mesozoic or avian.
MULDER, E.W.A. Transatlantic latest Cretaceous mosasaurs (Reptilia,
Lacertilia) from the Maastrichtian type area and New Jersey. pp.
As has been argued by Mulder before, _Mosasaurus hoffmanni_ (from
Maastricht) and _M. maximus_ (from New Jersey) prove to be the same
species (contra arguments from Lingham-Soliar (1995)). The numerous
photos of both species seem to clinch it. Similarly, _Plioplatecarpus
marshi_ and _P. depressus_ are probably the same.
GRIGORESCU, D., VENCZEL, M., CSIKI, Z. and LIMBEREA, R. New latest
Cretaceous microvertebrate fossil assemblages from the Hateg Basin
(Romania). pp. 301-314.
The Hateg fauna is predominantly Neopangean with the suggestion of a
composite palaeobiogeographical origin - as advocated before on the
basis of Gondwanan dinosaurs in Upper K Europe. Includes gars,
discoglossids (_Eodiscoglossus_), albanerpetontids, bits of
anguimorphs and scincomorphs, the crocodyliforms _Doratodon_ (they
put it in family Hsisosuchidae) and _Allodaposuchus_,
velociraptorines, multituberculates, my favourite fossil turtle
_Kallokibotion_ (see Martill and Naish 1999) and _Rhabdodon_.
MARTILL, D. M. and FREY, E. A possible azhdarchid pterosaur from the
Crato Formation (Early Cretaceous, Aptian) of northeast Brazil. pp.
A small pterosaur wing (approx. 100 cm long) composed of three
articulated phalanges and the major metacarpal has the T-shaped
azhdarchid cross section. The early geological age and small size of
the specimen are of special interest: did azhdarchids start out
small, and did they first evolve in the southern hemisphere?
COMPANY, J., IGNACIO RUIZ-OMENACA, J. and PEREDA SUBERBIOLA, X. A
long-necked pterosaur (Pterodactyloidea, Azhdarchidae) from the Upper
Cretaceous of Valencia, Spain. pp. 319-333.
Fragmentary bits, including cervical vertebrae and limb bones, of a
probably Maastrichtian azhdarchid indicate a medium-sized form
(wingspan approx. 5.5 m) that is different from _Arambourgiania_ and
_Quetzalcoatlus_ but otherwise indet. From terrestrial sediments.
JIANU, C-M. and WEISHAMPEL, D. B. The smallest of the largest: a new
look at possible dwarfing in sauropod dinosaurs. pp. 335-343.
_Magyarosaurus dacus_ really is a heterochronic dwarf, as revealed by
regression analyses of humeral length and optimisation of humeral
data onto titanosaurian cladograms.
CASANOVAS, M. L., PEREDA SUBERBIOLA, X., SANTAFE, J. V. and
WEISHAMPEL, D. B. A primitive euhadrosaurian dinosaur from the
uppermost Cretaceous of the Ager syncline (southern Pyrenees,
Catalonia). pp. 345-356.
Left lower jaw - the Fontllonga taxon - is a new species different
from _Telmatosaurus_ and _Pararhabdodon_; is more derived than the
former. Detailed discussion of mandibular/tooth characters employed
in hadrosaur phylogenies with the generation of a cladogram:
intriguingly, _Probactrosaurus_ and _Bactrosaurus_ form a clade that
is sister to _Telmatosaurus_ + Euhadrosauria. The Fontllonga animal
is sister taxon to other euhadrosaurians (hadrosaurids +
lambeosaurids). The survival of this new taxon in the Iberian
peninsula suggests that European Late K hadrosaurs were relicts.
WIESHAMPEL, D. B., MULDER, E. W. A., DORTANGS, R. W., JAGT, J. W. M.,
JIANU, C-M., KUYPERS, M. M. M., PEETERS, H. G. G. and SCHULP, A. S.
Dinosaur remains from the type Maastrichtian: an update. pp. 357-365.
Isolated hadrosaur remains including dental and maxillary fragments,
an isolated metatarsal and broken humerus. Can't be identified to
species but suggests the presence of more than one non-lambeosaurine
and a possible euhadrosaurian (Euhadrosauria used here is all
hadrosauroids excepting _Telmatosaurus_).
NAISH, D. Theropod dinosaur diversity and palaeobiology in the
Wealden Group (Early Cretaceous) of England: evidence from a
previously undescribed tibia. pp. 367-373.
Tibia from indeterminate tetanuran: has tooth marks on the caudal
surface that appear to have been made by a theropod. Being from the
Hastings Beds, the specimen is old as Wealden theropods go and
suggests an animal of _Deinonychus_-like size: it is not the same as
any other Wealden theropods for which tibiae are known (including the
new Isle of Wight animal).
KRISTOFFERSEN, A. V. Lithornithid birds (Aves, Palaeognathae) from
the Lower Palaeogene of Denmark. pp. 375-381.
Sternum, pelvis and femur from the Fur Formation is from a small
lithornithid - about the same size as _Lithornis (= _Pediorallus_)
hookeri_, the smallest described member of the group (from the London
Clay). Some discussion of palaeognath monophyly - Anette suggests
that lithornithids may have been shorebird-like in habits.
"I knew we had something in common"
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