ABSTRACT A new species of rheid, Opisthodactylus kirchneri, sp. nov., is erected on the
basis of associated elements of both hind limbs from the late Miocene in northwestern …

The extinct euphractine Prozaedyus was recognized remarking the evident morphological
resemblance of the dorsal carapace with the extant piche or pygmy armadillo Zaedyus …

Two new crocodyliform specimens found in a recently discovered locality from the Late
Cretaceous of Patagonia (Argentina) are described herein. One of them comprises an …

Actaeonellid gastropods constitute one family of the cephalaspidean opisthobranch
superfamily Acteonacea. During the Cretaceous they were one of the most common biotic …

The late Barremian laminated limestones of Las Hoyas in eastern Spain are famous for the
large number, diversity, and quality of the fossils that they have yielded. Herein, anuran …

Diagnosis-A carnotaur theropod whose skull differs from Carnotaurus sastrei by having a
longer and lower rostrum and external antorbital fenestra, a horizontal ventral margin of the …

Two new crocodyliform specimens found in a recently discovered locality from the late
Cretaceous of Patagonia (Argentina) are described herein. One of them comprises an …

Very few remains of ceratopsid dinosaurs have been recovered so far from the Difunta
Group of Coahuila, Mexico. The enigmatic chasmosaurine Coahuilaceratops magnacuerna …

Abelisauridae is a theropod clade with a wide distribution in the Late Cretaceous of
Gondwana. Some of the best preserved abelisaurid specimens were recovered from …