Chorrillo Formation on:
[Wikipedia]
[Google]
[Amazon]
The Chorrillo Formation, also named as Chorillo Formation,Río Leona
at
The Chorrillo Formation, also named as Chorillo Formation,at
Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world.
History
Fossilworks was cre ...
.org is a Maastrichtian
The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interv ...
geologic formation
Formation may refer to:
Linguistics
* Back-formation, the process of creating a new lexeme by removing or affixes
* Word formation, the creation of a new word by adding affixes
Mathematics and science
* Cave formation or speleothem, a secondary ...
in southern Patagonia
Patagonia () refers to a geographical region that encompasses the southern end of South America, governed by Argentina and Chile. The region comprises the southern section of the Andes Mountains with lakes, fjords, temperate rainforests, and ...
, Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, t ...
. The formation is more than thick and underlies the Calafate Formation
''Berberis'' (), commonly known as barberry, is a large genus of deciduous and evergreen shrubs from tall, found throughout temperate and subtropical regions of the world (apart from Australia). Species diversity is greatest in South Americ ...
and rests on top of the La Irene Formation
La Irene Formation is a Maastrichtian geologic formation in southern Patagonia, Argentina. The formation is thick and underlies the Chorrillo Formation and rests on top of the Cerro Fortaleza Formation.Marenssi et al., 2003, p.406
Description
...
.Marenssi et al., 2003, p.406
Fossils
Dinosaur remains are among the fossils that have been recovered from the formation. Fossils recovered from the formation are: *;Dinosaurs ** ''Isasicursor
''Isasicursor'' (meaning "Isasi's runner" after Marcelo Pablo Isasi) is a genus of elasmarian ornithopod from the Chorrillo Formation from Santa Cruz Province in Argentina. The type and only species is ''Isasicursor santacrucensis''. It was a ...
''
** ''Nullotitan
''Nullotitan'' (meaning "Nullo's giant", in honor of paleontologist Francisco Nullo) is a genus of lithostrotian titanosaur from the Chorrillo Formation from Santa Cruz Province in Argentina. The type and only species is ''Nullotitan glaciaris'' ...
''
** '' Maip''
** ''Kookne
''Kookne'' is a prehistoric bird genus from the Late Cretaceous. Known from a coracoid, the remains of the only known species ''Kookne yeutensis'' were found in rocks from the Late Cretaceous ( Maastrichtian) Chorrillo Formation
The Chorri ...
''
** '' Yatenavis''
** Ankylosauria
Ankylosauria is a group of herbivorous dinosaurs of the order Ornithischia. It includes the great majority of dinosaurs with armor in the form of bony osteoderms, similar to turtles. Ankylosaurs were bulky quadrupeds, with short, powerful limbs ...
indet.
** Euiguanodontia
Iguanodontia (the iguanodonts) is a clade of herbivorous dinosaurs that lived from the Middle Jurassic to Late Cretaceous. Some members include ''Camptosaurus'', ''Dryosaurus'', ''Iguanodon'', ''Tenontosaurus'', and the hadrosaurids or "duck-bill ...
indet.
** Hadrosauridae
Hadrosaurids (), or duck-billed dinosaurs, are members of the ornithischian family Hadrosauridae. This group is known as the duck-billed dinosaurs for the flat duck-bill appearance of the bones in their snouts. The ornithopod family, which incl ...
indet.
** Megaraptoridae indet.
** Noasauridae
Noasauridae is an extinct family of theropod dinosaurs belonging to the group Ceratosauria. They were closely related to the short-armed abelisaurids, although most noasaurids had much more traditional body types generally similar to other the ...
indet.
** Unenlagiidae indet.
*;Anurans
** Anura indet.
** Calyptocephalellidae indet
*;Fishes
** Teleostei
Teleostei (; Greek ''teleios'' "complete" + ''osteon'' "bone"), members of which are known as teleosts ), is, by far, the largest infraclass in the class Actinopterygii, the ray-finned fishes, containing 96% of all extant species of fish. Tele ...
indet.
** Vidalamiinae indet.
*;Mammals
** ''Magallanodon
''Magallanodon'' is a genus of mammals from the extinct group Gondwanatheria. It contains a single species, ''Magallanodon baikashkenke''. The species is the first Mesozoic mammal known from Chile, and is Late Cretaceous in age. It is known fr ...
''
** Mammalia
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fu ...
indet.
*;Mosasaurs
** Mosasauridae indet.
*;Snakes
** '' Rionegrophis''
** Serpentes indet.
*;Turtles
** Chelidae
Chelidae is one of three living families of the turtle suborder Pleurodira, and are commonly called Austro-South American side-neck turtles. The family is distributed in Australia, New Guinea, parts of Indonesia, and throughout most of South Ame ...
indet.
Other fossils recovered from the formation are:
;Gastropods
* '' Pomacea'' sp.
*Pleuroceridae
Pleuroceridae, common name pleurocerids, is a family of small to medium-sized freshwater snails, aquatic gilled gastropod mollusks in the superfamily Cerithioidea.These snails have an operculum and typically a robust high-spired shell.
Reprodu ...
indet.
* ''Potamolithus
''Potamolithus'' is a genus of small freshwater snails that have an operculum, aquatic gastropod mollusks in the family Tateidae.Davis G. M. & Pons da Silva M. C. (1984). "''Potamolithus'': morphology, convergence, and relationships among hydr ...
'' sp.
* '' Physa'' sp.
* ''Stenophysa
''Stenophysa'' is a genus of gastropods belonging to the family Physidae.MolluscaBase eds. (2021). MolluscaBase. Stenophysa E. von Martens, 1898. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=ta ...
'' sp.
*Achatinidae
Achatinidae (New Latin, from Greek "''agate''") is a family of medium to large sized tropical land snails, terrestrial pulmonate gastropod mollusks from Africa.
Well known species include ''Achatina achatina'' the Giant African Snail, and ''L ...
indet.
* ''Holospira
''Holospira'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Urocoptidae.
''Holospira'' is the type genus of the subfamily 'Holospirinae Pilsbry, 1946'.
Etymology
''Holos'' (ὅλος) fro ...
'' 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
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented.
Containing body fossils
* List of stratigraphic units with dinosaur body fossils
** List of stratigraphic units with f ...
References
Bibliography
* * * * *{{Cite journal , last1=Rozadilla, first1=S., last2=Novas, first2=F., last3=Agnolin, first3=F., last4=Manabe, first4=M., last5=Tsuihiji, first5=T. , year=2021, title=Ornithischian remains from the Chorrillo Formation (Upper Cretaceous), southern Patagonia, Argentina, and their implications on ornithischian paleobiogeography in the Southern Hemisphere, url=https://www.sciencedirect.com/science/article/abs/pii/S0195667121001282, journal=Cretaceous Research, volume=125, doi=10.1016/j.cretres.2021.104881, accessdate=2022-02-06Further 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 Geologic formations of Argentina Cretaceous Argentina Maastrichtian Stage of South America Shale formations Formations Fossiliferous stratigraphic units of South America Paleontology in Argentina Geography of Santa Cruz Province, Argentina Geology of Patagonia