Abstract
Projections, tubercles, or spines of bone at the anterior margin of the piriform aperture occur in widely varying forms among catarrhine primates. This paper describes, illustrates, and tabulates the frequencies of such structures by age and sex in a large collection of Pan troglodytes verus skulls. In the overall sample of 263 skulls where the region could be observed, these protuberances of bone occur bilaterally in 10.7% of specimens and unilaterally in an additional 3.4%. They increase in frequency with age to a high of 16.9% in adult and older animals. Among adult specimens, these projections of bone in the anterior nasal region are present more commonly in females than in males. In a comparative context, variants on this structure in nonhuman primates, some of them documented previously, should help to counter the cladistic conception that the anterior nasal spine is an apomorphic or evolutionary novel morphological structure in hominids.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 95-101 |
| Number of pages | 7 |
| Journal | Zeitschrift für Morphologie und Anthropologie |
| Volume | 79 |
| Issue number | 1 |
| State | Published - Jan 1 1992 |
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All Science Journal Classification (ASJC) codes
- Medicine(all)
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Apes and apomorphies : the anterior nasal spine as a projection of cladistic conceptions. / Eckhardt, Robert Barry; Protsch von Zieten, R. R.
In: Zeitschrift für Morphologie und Anthropologie, Vol. 79, No. 1, 01.01.1992, p. 95-101.Research output: Contribution to journal › Article
TY - JOUR
T1 - Apes and apomorphies
T2 - the anterior nasal spine as a projection of cladistic conceptions.
AU - Eckhardt, Robert Barry
AU - Protsch von Zieten, R. R.
PY - 1992/1/1
Y1 - 1992/1/1
N2 - Projections, tubercles, or spines of bone at the anterior margin of the piriform aperture occur in widely varying forms among catarrhine primates. This paper describes, illustrates, and tabulates the frequencies of such structures by age and sex in a large collection of Pan troglodytes verus skulls. In the overall sample of 263 skulls where the region could be observed, these protuberances of bone occur bilaterally in 10.7% of specimens and unilaterally in an additional 3.4%. They increase in frequency with age to a high of 16.9% in adult and older animals. Among adult specimens, these projections of bone in the anterior nasal region are present more commonly in females than in males. In a comparative context, variants on this structure in nonhuman primates, some of them documented previously, should help to counter the cladistic conception that the anterior nasal spine is an apomorphic or evolutionary novel morphological structure in hominids.
AB - Projections, tubercles, or spines of bone at the anterior margin of the piriform aperture occur in widely varying forms among catarrhine primates. This paper describes, illustrates, and tabulates the frequencies of such structures by age and sex in a large collection of Pan troglodytes verus skulls. In the overall sample of 263 skulls where the region could be observed, these protuberances of bone occur bilaterally in 10.7% of specimens and unilaterally in an additional 3.4%. They increase in frequency with age to a high of 16.9% in adult and older animals. Among adult specimens, these projections of bone in the anterior nasal region are present more commonly in females than in males. In a comparative context, variants on this structure in nonhuman primates, some of them documented previously, should help to counter the cladistic conception that the anterior nasal spine is an apomorphic or evolutionary novel morphological structure in hominids.
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M3 - Article
VL - 79
SP - 95
EP - 101
JO - Anthropologischer Anzeiger
JF - Anthropologischer Anzeiger
SN - 0003-5548
IS - 1
ER -