Aylacostoma Aylacostoma stigmaticum Aylacostoma chloroticum Aylacostoma guaraniticum List of animals that are extinct in the wild List of non-marine molluscs of Argentina Hemisinidae List of recently extinct molluscs Rheophile Yacyretá Dam List of recently extinct invertebrates List of non-marine molluscs of Venezuela List of South American animals extinct in the Holocene List of data deficient molluscs List of gastropods described in the 2000s List of data deficient invertebrates Castilletes Formation Cocinetas Basin List of fossiliferous stratigraphic units in Colombia