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Protathlitis Cinctorrensis
''Protathlitis'' (meaning "champion") is a genus of spinosaurid dinosaur from the Early Cretaceous (Barremian) Arcillas de Morella Formation of Province of Castellón, Castellón, Spain. The type species, type and Monotypic taxon, only species is ''Protathlitis cinctorrensis'', known from a partial skeleton. It was a Basal (phylogenetics), basal member of the Baryonychinae. Its discovery, as well as those of the spinosaurids ''Camarillasaurus'', ''Iberospinus'', ''Riojavenatrix'', and the contemporary ''Vallibonavenatrix'' shows that the Iberian Peninsula held a diverse assemblage of spinosaurids during the Early Cretaceous. Discovery and naming The holotype remains, the maxillary fragment 8ANA-109 and caudal vertebrae 3ANA83, 4ANA43, 4ANA69, 4ANA76, and 5ANA78, were recovered from the ANA site of the Arcillas de Morella Formation, which was discovered in 1998 and remained unexplored until 2002. A tooth, 4ANA-11, possibly from the left mandible or right maxilla, was also referr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous
The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 Megaannum#SI prefix multipliers, Ma to 100.5 Ma. Geology Proposals for the exact age of the Barremian–Aptian boundary ranged from 126 to 117 Ma until recently (as of 2019), but based on drillholes in Svalbard the defining Anoxic event#Cretaceous, early Aptian Oceanic Anoxic Event 1a (OAE1a) was dated to 123.1±0.3 Ma, limiting the possible range for the boundary to c. 122–121 Ma. There is a possible link between this anoxic event and a series of Early Cretaceous large igneous provinces (LIP). The Ontong Java Plateau, Ontong Java-Manihiki Plateau, Manihiki-Hikurangi Plateau, Hikurangi large igneous province, emplaced in the South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Onto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
