New specimens of Picromomyids (Plesiadapiformes, Primates) with description of a new species of Alveojunctus

Mary T. Silcox, Kenneth D. Rose, Stephen L. Walsh

Research output: Contribution to journalArticle

Abstract

Two new specimens attributable to the plesiadapiform family Picromomyidae are documented. One, a lower molar, represents a new species here named Alveojunctus bowni. This species is the largest and most derived picromomyid currently known, with an extremely simplified molar morphology. The second new specimen is a fragmentary lower jaw attributed to Picromomys petersonorum; the specimen includes the first complete lower central incisor known for a picromomyid. This tooth shows none of the derived features seen in microsyopid I1s, providing no support for a tie to this family. Instead, it is most similar to I1 in Tinimomys graybulliensis, supporting a close relationship between Picromomyidae and Micromomyidae.

Original languageEnglish (US)
Pages (from-to)1-11
Number of pages11
JournalAnnals of Carnegie Museum
Volume71
Issue number1
StatePublished - Jan 1 2002

Keywords

  • Incisors
  • Micromomyidae
  • Picromomyidae
  • Plesiadapiformes
  • Primates
  • Teeth

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Geology

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