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Olfactory fossa of Tremacebus harringtoni (platyrrhini, early Miocene, Sacanana, Argentina): implications for activity pattern.

Publication ,  Journal Article
Kay, RF; Campbell, VM; Rossie, JB; Colbert, MW; Rowe, TB
Published in: The anatomical record. Part A, Discoveries in molecular, cellular, and evolutionary biology
November 2004

CT imaging was undertaken on the skull of approximately 20-Myr-old Miocene Tremacebus harringtoni. Here we report our observations on the relative size of the olfactory fossa and its implications for the behavior of Tremacebus. The endocranial surface of Tremacebus is incomplete, making precise estimate of brain size and olfactory fossa size imprecise. However, olfactory fossa breadth and maximum endocranial breadth measured from CT images of one catarrhine species and eight platyrrhine species for which volumes of the olfactory bulb and brain are known show that the osteological proxies give a reasonably accurate indication of relative olfactory bulb size. Nocturnal Aotus has the largest relative olfactory fossa breadth and the largest olfactory bulb volume compared to brain volume among extant anthropoids. Tremacebus had a much smaller olfactory fossa breadth and, by inference, bulb volume--within the range of our sample of diurnal anthropoids. Variations in the relative size of the olfactory bulbs in platyrrhines appear to relate to the importance of olfaction in daily behaviors. Aotus has the largest olfactory bulbs among platyrrhines and relies more on olfactory cues when foraging than Cebus, Callicebus, or Saguinus. As in other examples of nocturnal versus diurnal primates, nocturnality may have been the environmental factor that selected for this difference in Aotus, although communication and other behaviors are also likely to select for olfactory variation in diurnal anthropoids. Considering the olfactory fossa size of Tremacebus, olfactory ability of this Miocene monkey was probably not as sensitive as in Aotus and counts against the hypothesis that Tremacebus was nocturnal. This finding accords well with previous observations that the orbits of Tremacebus are not as large as nocturnal Aotus.

Duke Scholars

Published In

The anatomical record. Part A, Discoveries in molecular, cellular, and evolutionary biology

DOI

EISSN

1552-4892

ISSN

1552-4884

Publication Date

November 2004

Volume

281

Issue

1

Start / End Page

1157 / 1172

Related Subject Headings

  • Tomography, X-Ray Computed
  • Species Specificity
  • Smell
  • Skull
  • Phylogeny
  • Paleontology
  • Olfactory Bulb
  • Fossils
  • Circadian Rhythm
  • Cebidae
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Kay, R. F., Campbell, V. M., Rossie, J. B., Colbert, M. W., & Rowe, T. B. (2004). Olfactory fossa of Tremacebus harringtoni (platyrrhini, early Miocene, Sacanana, Argentina): implications for activity pattern. The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology, 281(1), 1157–1172. https://doi.org/10.1002/ar.a.20121
Kay, Richard F., Victoria M. Campbell, James B. Rossie, Matthew W. Colbert, and Tim B. Rowe. “Olfactory fossa of Tremacebus harringtoni (platyrrhini, early Miocene, Sacanana, Argentina): implications for activity pattern.The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology 281, no. 1 (November 2004): 1157–72. https://doi.org/10.1002/ar.a.20121.
Kay RF, Campbell VM, Rossie JB, Colbert MW, Rowe TB. Olfactory fossa of Tremacebus harringtoni (platyrrhini, early Miocene, Sacanana, Argentina): implications for activity pattern. The anatomical record Part A, Discoveries in molecular, cellular, and evolutionary biology. 2004 Nov;281(1):1157–72.
Kay, Richard F., et al. “Olfactory fossa of Tremacebus harringtoni (platyrrhini, early Miocene, Sacanana, Argentina): implications for activity pattern.The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology, vol. 281, no. 1, Nov. 2004, pp. 1157–72. Epmc, doi:10.1002/ar.a.20121.
Kay RF, Campbell VM, Rossie JB, Colbert MW, Rowe TB. Olfactory fossa of Tremacebus harringtoni (platyrrhini, early Miocene, Sacanana, Argentina): implications for activity pattern. The anatomical record Part A, Discoveries in molecular, cellular, and evolutionary biology. 2004 Nov;281(1):1157–1172.

Published In

The anatomical record. Part A, Discoveries in molecular, cellular, and evolutionary biology

DOI

EISSN

1552-4892

ISSN

1552-4884

Publication Date

November 2004

Volume

281

Issue

1

Start / End Page

1157 / 1172

Related Subject Headings

  • Tomography, X-Ray Computed
  • Species Specificity
  • Smell
  • Skull
  • Phylogeny
  • Paleontology
  • Olfactory Bulb
  • Fossils
  • Circadian Rhythm
  • Cebidae