An ethmoid exposure (os planum) in the orbit of Indri indri (Primates, Lemuriformes).

Journal Article (Journal Article)

In 6 of 17 skulls of Indri indri retaining distinct sutures in the medial orbital wall, a small separate bony element intervenes between the frontal and the maxillolacrimal suture. This element is demonstrably continuous with the ethmoid on one such skull. The occurrence of an ethmoid exposure in the orbit of Indri suggests that this trait is not a simple function of orbital size and convergence. Since such an exposure is found in non-cheirogaleine lemuriforms, its distribution provides no support for the hyothesis that lorises and galagos are derived from cheirogaleines.

Full Text

Duke Authors

Cited Authors

  • Cartmill, M; Gingerich, PD

Published Date

  • May 1, 1978

Published In

Volume / Issue

  • 48 / 4

Start / End Page

  • 535 - 538

PubMed ID

  • 418693

Electronic International Standard Serial Number (EISSN)

  • 1096-8644

International Standard Serial Number (ISSN)

  • 0002-9483

Digital Object Identifier (DOI)

  • 10.1002/ajpa.1330480414


  • eng