Fig. 4 in A Possible Heptaxodontine and Other Caviidan Rodents from the Quaternary of Jamaica

Fig. 4. Cheektooth morphology in Jamaican clidomyines (after MacPhee, 1984): (A–J) examples of variants in lamellar conformation. Specimen A, holotype of ''Spirodontomys jamaicensis''(= Clidomys parvus); specimen E, holotype of Alterodon major; and specimen F, holotype of ''Speoxenus cundalli'' (= C. osborni). All other specimens assigned to Clidomys sp. Arrow in B points to developmental defect in enamel deposition, similar to that seen in Alterodon holotype (fig. 3B). Although no other teeth identical to the Alterodon holotype have been recovered, the existence of an appreciable amount of morphological variation in the existing hypodigm throws considerable doubt on the former's distinctiveness. In this diagram only: AMNH = AMNHP. Scale = 1 mm.