INVESTIGADORES
FERNANDEZ Marta Susana
congresos y reuniones científicas
Título:
Campanian and Maastrichtian mosasaurs from Peninsula Antarctica and Patagonia
Autor/es:
FERNÁNDEZ, M. ; GASPARINI, Z.
Reunión:
Encuentro; third Mosasaur Meeting; 2010
Resumen:
Mosasaurs from Antarctica have
been recovered from the late Campanian and early and late Maastrichtian in
James Ross, Vega and Seymour Islands within the James Ross Basin. Tylosauriniae are represented by
the late Campanian-early Maastrichtian
remains of Taniwhasaurus
antarcticus (Novas et al., 2002)
and by late Maastrichtian Tylosaurinae indet.; Plioplatecarpinae by late
Maastrichtian Plioplatecarpus sp.;
and Mosasaurinae by late Maastrichtian Liodon
sp; Mosasaurus sp.and Mosasaurinae
indet. Materials from Cape Lamb, recently identified in the Museo de La Plata collection (Argentina), suggest that the stratigraphic range
of Plioplatecarpus and Liodon
within the James Ross Basin
extends back to the early Maastrichtian.
Up to date T. antarcticus
holotype is the most complete specimen exhumed from Antarctica.
In northern Patagonia, mosasaurs have been recovered from the late
Maastrichtian of the Jagüel Formation, Neuquén Basin.
Patagonian mosasaurs are represented by Mosasaurus sp. aff. M. hoffmanni, Plioplatecarpus sp., Prognathodon
sp., and Mosasaurinae indet. Up to date no Tylosaurinae have been found in Patagonia. Both in the James Ross and Neuquén basins, Mosasaurus sp. and Plioplatecarpus sp. occurred close to the K/Pg. boundary.