Metriorhynchidae is an extinct group of Jurassic–Cretaceous crocodylomorphs that developed a fully pelagic lifestyle. Its Jurassic record outstanding (it includes around 40 nominal species), while the records can be restricted to Cretaceous are particularly sparse. Here we describe partial skull new species Cricosaurus, Cricosaurus puelchorum sp. nov., from lower Berriasian Vaca Muerta Formatio...

Moore, G.T., Sloan, L.C., Hayashida, D.N. and Umrigar, N.P., 1992. Paleoclimate of the Kimmeridgian/Tithonian (Late Jurassic) world: II. Sensitivity tests comparing three different paleotopographic settings. Palaeogeogr,, Palaeoclimatol., Palaeoecol., 95: 229-252. Topography and location of continents largely determine present-day climate. We conclude that in the geologic past paleotopographic ...

The stable carbon isotopic compositions of carbonate sediments (?13Ccarb) have been widely used to reconstruct the global cycle and as a stratigraphic correlation tool. This work investigates ?13Ccarb record marine organic-rich, mixed siliciclastic?carbonate mudstones accumulated from Tithonian (late Jurassic) early Valanginian (early Cretaceous) in retro-arc basin connected Proto-Pacific Ocean...

The perforated Pediastrum Meyen s.l. species are recorded for the first time in basal levels of Tithonian Vaca Muerta Formation, extending its stratigraphical record to ages as old Late Jurassic times. Based on ecological requirements simplex var. clathratum and P. biwaense, previously warm paleoclimatic conditions suggested by Neuquén Basin, reinforced. co-occurrence different mechanisms that ...