The Yanigua Formation is a

geologic formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...

Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares wit ...

. The

lagoon A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') a ...

claystone Mudrocks are a class of fine-grained siliciclastic sedimentary rocks. The varying types of mudrocks include siltstone, claystone, mudstone, slate, and shale. Most of the particles of which the stone is composed are less than and are too sm ...

s and

marl Marl is an earthy material rich in carbonate minerals, clays, and silt. When hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae. Marl makes up the lower part o ...

s preserve

fossils A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...

dating back to the

Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...

period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept ...

.Yanigua 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 The formation hosts

Dominican amber Dominican amber is amber from the Dominican Republic derived from resin of the extinct tree ''Hymenaea protera''. Dominican amber differentiates itself from Baltic amber by being nearly always transparent, and it has a higher number of fossil incl ...

Fossil content

* '' Aureofungus yaniguaensis'', named after the formation * ''

Cephalotes alveolatus ''Cephalotes alveolatus'' is an extinct species of ant in the subfamily Myrmicinae known from a single Middle Miocene fossil found in amber on Hispaniola. At the time of description ''C. alveolatus'' was one of seven fossil ant species placed in ...

'', '' C. caribicus'', '' C. dieteri'', '' C. hispaniolicus'' * ''

Enischnomyia stegosoma ''Enischnomyia'' is an extinct genus of bat fly in the family Streblidae. At the time of its description the new genus comprised a single species, ''Enischnomyia stegosoma'', known from a single Miocene fossil found on Hispaniola. ''E. stegosom ...

'' * ''

Mesembrinella caenozoica ''Mesembrinella caenozoica'' is an extinct species of blow fly in the family Mesembrinellidae. The species is solely known from the Middle Miocene Dominican amber deposits on the island of Hispaniola. History and classification ''Mesembrinel ...

'' * ''

Vetufebrus ovatus ''Vetufebrus'' is an extinct genus of haemospororida in the family Plasmodiidae. At the time of its description the new genus comprised a single species ''Vetufebrus ovatus'' known from a single Miocene Dominican amber fossil found on Hispaniola ...

'' * '' ?Neocallichirus quisquellanus'' * '' Portunus sp.''

References

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Fossil content

See also

References

Further reading