Chorrillo Formation
Introduction 262x262pxThe '''Chorrillo Formation''', also named as '''Chorillo Formation''', is a Maastrichtian (Late Cretaceous Epoch, 72.1 - 66 million years ago) geologic formation in southern Patagonia, Argentina. The formation is more than  thick and underlies the Calafate Formation and rests on top of the La Irene Formation.
Fossils Dinosaur remains are among the fossils that have been recovered from the formation.Fossils recovered from the formation are:*;Dinosaurs**  ''Isasicursor''**  ''Nullotitan''**  ''Maip''**  ''Kookne''**  ''Yatenavis''** Ankylosauria indet. ** Euiguanodontia indet. ** Hadrosauridae indet. ** Megaraptoridae indet. ** Noasauridae indet. ** Unenlagiidae indet. *;Anurans** Anura indet. ** Calyptocephalellidae indet*;Fishes** Teleostei indet. ** Vidalamiinae indet. *;Mammals** ''Magallanodon''** Mammalia indet. ** ''Patagorhynchus''** ''Patagomaia''*;Mosasaurs** Mosasauridae indet. *;Snakes** ''Rionegrophis''** Serpentes indet. *;Turtles** Chelidae indet.Other fossils recovered from the formation are:;Gastropods* ''Pomacea'' sp. *Pleuroceridae indet. * ''Potamolithus'' sp. * ''Physa'' sp. * ''Stenophysa'' sp. *Achatinidae indet. * ''Holospira'' sp. *Bulimulidae indet. *;Plants** ''Podocarpoxylon dusenii''*;Pollen** ''Baculatisporites comaumensis''** ''Baculatisporites kachaikensis''** ''Ceratosporites equalis''** ''Clavifera triplex''** ''Clavatipollenites sp. ''** ''Concavissimisporites sp. ''** ''Cyatheacidites annulatus''** ''Cyathidites australis''** ''Cyathidites minor''** ''Cyathidites rafaeli''** ''Foveosporites canalis''** ''Gleicheniidites senonicus''** ''Laevigatosporites ovatus''** ''Leptolepidites sp. cf. L. major''** ''Microcachryidites antarcticus''** ''Peninsulapollis gilli''** ''Phyllocladidites mawsonii''** ''Podocarpidites sp. cf. P. ellipticus''** ''Podocarpidites sp. cf. P. herbstii''** ''Podocarpidites sp. ''** ''Retitriletes austroclavatidites''** ''Trichotomosulcites subgranulatus''** ''Tricolpites reticulatus''** ''Tricolpites sp. ''** ''Trilites fasolae''** ''Trilites sp. cf. T. tuberculiformis''** ''Trilites sp. cf. T parvallatus''** ''Tuberculatosporites parvus''** ''Vitreisporites signatus''
See also * List of dinosaur-bearing rock formations
References === Bibliography ===* * * * ** *
Further reading * J. E. Powell. 2003.Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173