[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
From: Ben Creisler
In case this paper has not been mentioned yet:
Young, Mark T., and Marco Brandalise de Andrade, 2009.
What is Geosaurus? Redescription of Geosaurus giganteus
(Thalattosuchia: Metriorhynchidae) from the Upper Jurassic
of Bayern, Germany. Zoological Journal of the Linnean
Society 157: 551-585.
A major heads up is that the most widely depicted image of
Geosaurus with a narrow, rather elongated snout, is based
on a nearly complete specimen E. Fraas called Geosaurus
suevicus. The authors, however, place that species and
other long-snouted fish-eating forms of Geosaurus in the
genus Cricosaurus. Geosaurus itself had a fairly short
muzzle with slicing teeth designed for attacking large
prey. Various other species formerly placed in Geosaurus
or Dakosaurus are also shifted around. Dakosaurus and
Cricosaurus are both considered valid.
A small nomenclatural fix the authors missed, however, is
that Cricosaurus saltillense Buchy et al. 2006 (formerly
Geosaurus saltillense) should be Cricosaurus saltillensis.
The form "saltillense" is neuter in Latin, not masculine,
and needs to be emended to match the gender of "saurus."
Some additional historical info on Geosaurus can be found
in the Google books online version of the
Penny CyclopÃ¦dia of the Society for the Diffusion of
Useful Knowledge By Society for the Diffusion of Useful
Knowledge (Great Britain). (This 19th century work has
lots of vintage articles on fossil animals that buffs of
the history of paleontology may enjoy.)
The Geosaurus article explains that Cuvier intended the
name to refer to Ge, the mother of the giants in Greek
mythology, rather than expressing terrestrial habits.
Geosaurus was originally called Lacerta gigantea.