Guinea Corn Formation

Guinea Corn Formation
Stratigraphic range: Maastrichtian
TypeFormation
Location
CountryJamaica

The Guinea Corn Formation is a geologic formation in Jamaica. It preserves fossils dating back to the Cretaceous period.

IUGS geological heritage site

In respect of it being the 'most diverse and thickest limestone succession with abundant rudist bivalves within the Caribbean faunal province', the International Union of Geological Sciences (IUGS) included the 'Late Cretaceous rudist bivalves of the Caribbean Province' (Rio Minho, Clarendon parish) in its assemblage of 100 'geological heritage sites' around the world in a listing published in October 2022. The organisation defines an IUGS Geological Heritage Site as 'a key place with geological elements and/or processes of international scientific relevance, used as a reference, and/or with a substantial contribution to the development of geological sciences through history.'[1]

Fossil content

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
 Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Crustaceans

Crustaceans of the Guinea Corn Formation
Genus Species Location Stratigraphic position Material Notes Image
Amphicytherura[2] A. grandicribra Rio Minho, Jamaica Maastrichtian A schizocytherid ostracod
Asciocythere[2] A. cabbagehillensis Rio Minho, Jamaica Maastrichtian A cytherideid ostracod
Aysegulina[2] A. chapeltonensis Rio Minho, Jamaica Maastrichtian A hemicytherid ostracod
A. riominhoensis
A. sagitta
A. ventrocurva
Brachycythere[2] B. jamaicaensis Rio Minho, Jamaica Maastrichtian A trachyleberidid ostracod
Buntonia[2] B. nana Rio Minho, Jamaica Maastrichtian A trachyleberidid ostracod
B. vulgaris
Cytherelloidea[2] C. guineacornensis Rio Minho, Jamaica Maastrichtian A cytherellid ostracod
Dinglecythere[2][3] D. occulta Rio Minho, Jamaica Maastrichtian A schizocytherid ostracod
Eocytheropteron[2] E. hazeli Rio Minho, Jamaica Maastrichtian A cytherurid ostracod
E. jamaicaensis[2]
Eucytherura[2] E. mitchelli Rio Minho, Jamaica Maastrichtian A cytherurid ostracod
Floricythereis[2] F. exquisita Rio Minho, Jamaica Maatrichtian A trachyleberidid ostracod
Hemiparacytheridea[2] H. exquisita Rio Minho, Jamaica Maastrichtian A paracytherideid ostracod
Leiocythereis[2] L. polita Rio Minho, Jamaica Maastrichtian A trachyleberidid ostracod
Loxoconcha[2] L. pindarsensis Rio Minho, Jamaica Maastrichtian A loxoconchid ostracod
Ovocytheridea[2] O. rotunda Rio Minho, Jamaica Maastrichtian A cytherideid ostracod
Phrixocythere[2] P. unionensis Rio Minho, Jamaica Maastrichtian A hemicytherid ostracod
Pterygocythereis[2] P. babinoti Rio Minho, Jamaica Maastrichtian A trachyleberidid ostracod
Schizoptocythere[2] S. nana Rio Minho, Jamaica Maastrichtian A trachyleberidid ostracod
S. pinna
Schuleridea[2] S. exigua Rio Minho, Jamaica Maastrichtian A cytherideid ostracod
Spinicytheridea[2] S. compta Rio Minho, Jamaica Maastrichtian A cytherideid ostracod

See also

References

  1. ↑ "The First 100 IUGS Geological Heritage Sites" (PDF). IUGS International Commission on Geoheritage. IUGS. Retrieved 13 November 2022.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 T. Markham Puckett; Jean-Paul Colin; Simon Mitchell (2012). "New species and genera of Ostracoda from the Maastrichtian (Late Cretaceous) of Jamaica". Micropaleontology. 58 (5): 397–455. Bibcode:2012MiPal..58..397P. doi:10.47894/mpal.58.5.01. JSTOR 24413452. S2CID 249386052.
  3. ↑ Lucas Silveira Antonietto; Anna Abrahão; Dermeval Aparecido do Carmo; Ricardo Piazza Meireles (2013). "Taxonomy, biostratigraphy and paleozoogeography of Amphicytherura Butler and Jones, Aracajuia Krömmelbein and Dinglecythere Antonietto et al., n. gen. (Crustacea, Ostracoda)". Marine Micropaleontology. 105: 1–17. Bibcode:2013MarMP.105....1A. doi:10.1016/j.marmicro.2013.09.002.
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