The Tacuarembó Formation is a Late Jurassic ( Kimmeridgian) 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 secondar ...

of the eponymous department in northern Uruguay. The

fluvial In geography and geology, fluvial processes are associated with rivers and streams and the deposits and landforms created by them. When the stream or rivers are associated with glaciers, ice sheets, or ice caps, the term glaciofluvial or fluviog ...

to lacustrine sandstones,

siltstone Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, p ...

s and

mudstone Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from '' shale'' by its lack of fissility (parallel layering).Blatt, H., and R.J. Tracy, 1996, ''Petrology. ...

s preserve ichnofossils, turtles,

crocodylomorph Crocodylomorpha is a group of pseudosuchian archosaurs that includes the crocodilians and their extinct relatives. They were the only members of Pseudosuchia to survive the end-Triassic extinction. During Mesozoic and early Cenozoic times, cro ...

s, fish and invertebrates (

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

s and

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

s).

Fossil content

The following fossils have been reported from the formation:Tacuarembó Formation
at

Fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...

.org *

Reptile Reptiles, as most commonly defined are the animals in the class Reptilia ( ), a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates (lizards and snakes) and rhynchocephalians ( ...

s ** ''

Meridiosaurus vallisparadisi ''Meridiosaurus'' is an extinct genus of mesoeucrocodylian that is a possible member of the family Pholidosauridae. Remains have been found in the Late Jurassic Tacuarembó Formation in Tacuarembó, Uruguay. The genus was described in 1980 on th ...

''Fortier et al., 2011 ** '' Tacuarembemys kusterae''Perea et al., 2014 ** '' cf.'' '' Ceratosaurus'' sp.Soto & Perea, 2008 ** Coelurosauria indet. ** Mesoeucrocodylia indet. ** Testudines indet. ** Theropoda indet. ** '' Torvosaurus'' sp. ("''Torvosaurus'' ingens") ** '' Tacuadactylus luciae'' * Fish ** '' Arganodus tiguidiensis''Soto & Perea, 2010 ** '' Asiatoceratodus cf. tiguidiensis'' **''

Mawsonia gigas ''Mawsonia'' may refer to: * ''Mawsonia'' (fish), an extinct genus of prehistoric coelacanth fish which lived during the Cretaceous period * ''Mawsonia'' (fungus), a genus of fungi within the family Lichinaceae {{genus disambiguation ...

'' ** ''

Neoceratodus africanus ''Neoceratodus'' is a genus of lungfish in the family Neoceratodontidae. The extant Australian lungfish (''Neoceratodus forsteri'') is the only surviving member of this genus, but it was formerly much more widespread, being distributed throughout ...

''Perea et al., 2003 ** '' Priohybodus arambourgi''Soto et al., 2012 ** Halecostomi indet. ** Semionotiformes indet.Perea et al., 2003 *

Bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

s ** '' Diplodon sp.'' *

Gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

s ** Viviparidae indet. * Ichnofossils ** Ornithopoda indet. ** Sauropoda indet. ** Theropoda indet.Mesa & Perea, 2015

References

Bibliography

* * * * * * * * {{DEFAULTSORT:Tacuarembo Formation Geologic formations of Uruguay Jurassic System of South America Jurassic Uruguay Kimmeridgian Stage Sandstone formations Mudstone formations Siltstone formations Fluvial deposits Lacustrine deposits Ichnofossiliferous formations Formations Fossiliferous stratigraphic units of South America Paleontology in Uruguay Formations

Fossil content

See also

References

Bibliography