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Hateg Micropaleontological Material



  Codrea, V.; Smith, T.; Dica, P.; Folie, A.; Garcia, G.; Godefroit, P.;
  van Itterbeeck, J. 2002. Dinosaur egg nests, mammals and other
  vertebrates from a new Maastrichtian site of the Hateg Basin (Romania).
  _Comptes Rendus Palevol_ 1: 173-180.

The authers describe a new site, Totesti-baraj. Totesti-baraj lies about 2
km west of Sânpetru and 7 km south and west of Hateg, on the banks of the
Râul Mare River, and is exposed during drier months when the site is
otherwise below water. The sediments are fluvial in nature, with clays and
sandy paleosols, and there are calcrete sections. Geology suggests they
come from the Sânpetru Formation, but do not conform to the other sites of
the formation.

Dinosaur eggs and nests are represented 11 nests and more than 40 eggs in
them, nearly all of which are found within the paleosols; the eggs are
identified as the ootaxon *Megaloolithus cf. siruguei*, are subspherical
in shape, have a discretispherulitic microstructure and a tubocanaliculate
pore system. Other eggshell fragments have a geckonoid microstructure and
the shell pattern in dispersituberculate.

Amphibians are indicated by albanerpetontid distal humeri, an axis and
other vertebrae, and several dentaries with straight, pleurodont,
non-pedicellate, chisel-like teeth with slightly tricuspid crowns.

Lepidosaurians are represented by scincomorph jaws having pleurodont,
cylindrical, bicuspid, and asymmetrical crowns. They are likened to jaws
from Laño, Spain.

Dinosaurs are mainly represented by teeth, as usual. Hadrosauroids
(non-iguanodontoid iguanodontians, essentially) are known by
diamond-shaped crowns with well-developed marginal denticles and a single
prominent ridge; they are likened to *Telmatosaurus*. Nodosaurids are
represented by a crown with a few, very large vertical denticles (only
four for the complete crown) and a partial cingulum which is higher and
larger on one side of the crown than the other. Theropods are represented
by five dental morphotypes, including velociraptorine (most of the teeth),
troodontid (some), *Richardoestesia* (by one crown), and finally teeth
ascribed to both *Paronychodon* and *Euronychodon*, missing out on recent
discussion by Rauhut that offered *Paronychodon* is a collection of
unrelated teeth that belong to *Ricardoestesia* and *Dromaeosaurus*, and
*Euronychodon* to troodontids and dromaeosaurids. One must also note the
almost prevalent referral of isolated dromaeosaur teeth as
"velociraptorine", and this may simply be a reflection of lack of teeth
referrable to *Dromaeosaurus* itself, as it is the only "genus" in the
Dromaeosauridae which lacks the "velociraptorine" morphotype; thus, the
"velociraptorine" morphology is really probably just the "dromaeosaurid"
morphology.

Mammals are represented mainly by kogaionid multituberculates, referred to
*Kogaionon*, but smaller than *K. ungureanui*; another tooth is referred
to the kogaionid *Hainina*, but does not represent *H. godfriauxi*.

Note on spelling: Romanian names presented herein are transliterated where
the "s" in Totesti-baraj bears a cedilla and is pronounced "sh", the "j"
is pronounced as in "y", the fist "s" in Sânpetru is pronounced "s", the
"t" in Hateg bears a cedilla is is pronounced "ts."

  Cheers,

=====
Jaime A. Headden

  Little steps are often the hardest to take.  We are too used to making leaps 
in the face of adversity, that a simple skip is so hard to do.  We should all 
learn to walk soft, walk small, see the world around us rather than zoom by it.

"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)

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