The Ixcoy Formation is a geologic formation in Guatemala. It preserves fossils dating back to the Cretaceous period.Ixcoy Formation at Fossilworks.org The upper part of the Ixcoy Formation is laterally equivalent with the Campur Formation of the Petén Basin in northern Guatemala.Machorro Sagastume, 2005, p.9
Fossil content The following fossils have been uncovered from the formation:San Ramon at Fossilworks.orgSan Ramon-Barillas at Fossilworks.orgCapzin at Fossilworks.orgSan Mateo Ixtatan-Soloma at Fossilworks.org Biradiolites jamaicensis Chubbina jamaicensis Praeradiolites cf. verseyi Senalveolina aubouini Thyrastylon adhaerens Texicaprina cf. orbiculata Chondrodonta sp. ?Planocaprina sp.
See also List of fossiliferous stratigraphic units in Guatemala
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