Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya

Naomichi Ogihara, Sergio Almécija, Masato Nakatsukasa, Yoshihiko Nakano, Yasuhiro Kikuchi, Yutaka Kunimatsu, Haruyuki Makishima, Daisuke Shimizu, Tomo Takano, Hiroshi Tsujikawa, Miyuki Kagaya, Hidemi Ishida

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objectives: The carpal bones of the middle Miocene hominoid Nacholapithecus kerioi are described based on new materials. Materials and Methods: The materials comprise a trapezoid, three capitates, two hamates, a centrale, a lunate, a triquetrum, and a pisiform, collected during the 2001 and 2002 field seasons from Nachola, Kenya. We also describe a pisiform recently assigned to the type specimen of N. kerioi, KNM-BG 35250. Results: In the Nacholapithecus wrist, the ulnar styloid process articulates with both the triquetrum and pisiform, and the triquetrum facet on the hamate is relatively proximodistally oriented in dorsal view. The Nacholapithecus capitate possesses a moderate distopalmar hook-like process and separated radial articular facets for the trapezoid and the second metacarpal due to the carpometacarpal ligament attachment that is absent in the Proconsul capitate. Discussion: The carpal anatomy of Nacholapithecus is similar to that of the early Miocene hominoid Proconsul. However, Nacholapithecus wrist anatomy appears to exhibit slightly more emphasized stability. Am J Phys Anthropol 160:469–482, 2016.

Original languageEnglish
Pages (from-to)469-482
Number of pages14
JournalAmerican Journal of Physical Anthropology
Volume160
Issue number3
DOIs
Publication statusPublished - 2016 Jul 1

Fingerprint

Carpal Bones
Kenya
Wrist
Anatomy
Metacarpal Bones
Ligaments
Joints

Keywords

  • hand
  • hominoid
  • proconsul
  • wrist

ASJC Scopus subject areas

  • Anthropology
  • Anatomy

Cite this

Ogihara, N., Almécija, S., Nakatsukasa, M., Nakano, Y., Kikuchi, Y., Kunimatsu, Y., ... Ishida, H. (2016). Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya. American Journal of Physical Anthropology, 160(3), 469-482. https://doi.org/10.1002/ajpa.22984

Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya. / Ogihara, Naomichi; Almécija, Sergio; Nakatsukasa, Masato; Nakano, Yoshihiko; Kikuchi, Yasuhiro; Kunimatsu, Yutaka; Makishima, Haruyuki; Shimizu, Daisuke; Takano, Tomo; Tsujikawa, Hiroshi; Kagaya, Miyuki; Ishida, Hidemi.

In: American Journal of Physical Anthropology, Vol. 160, No. 3, 01.07.2016, p. 469-482.

Research output: Contribution to journalArticle

Ogihara, N, Almécija, S, Nakatsukasa, M, Nakano, Y, Kikuchi, Y, Kunimatsu, Y, Makishima, H, Shimizu, D, Takano, T, Tsujikawa, H, Kagaya, M & Ishida, H 2016, 'Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya', American Journal of Physical Anthropology, vol. 160, no. 3, pp. 469-482. https://doi.org/10.1002/ajpa.22984
Ogihara N, Almécija S, Nakatsukasa M, Nakano Y, Kikuchi Y, Kunimatsu Y et al. Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya. American Journal of Physical Anthropology. 2016 Jul 1;160(3):469-482. https://doi.org/10.1002/ajpa.22984
Ogihara, Naomichi ; Almécija, Sergio ; Nakatsukasa, Masato ; Nakano, Yoshihiko ; Kikuchi, Yasuhiro ; Kunimatsu, Yutaka ; Makishima, Haruyuki ; Shimizu, Daisuke ; Takano, Tomo ; Tsujikawa, Hiroshi ; Kagaya, Miyuki ; Ishida, Hidemi. / Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya. In: American Journal of Physical Anthropology. 2016 ; Vol. 160, No. 3. pp. 469-482.
@article{cc80e2a76aad4ed7b8b059df4cfd30ae,
title = "Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya",
abstract = "Objectives: The carpal bones of the middle Miocene hominoid Nacholapithecus kerioi are described based on new materials. Materials and Methods: The materials comprise a trapezoid, three capitates, two hamates, a centrale, a lunate, a triquetrum, and a pisiform, collected during the 2001 and 2002 field seasons from Nachola, Kenya. We also describe a pisiform recently assigned to the type specimen of N. kerioi, KNM-BG 35250. Results: In the Nacholapithecus wrist, the ulnar styloid process articulates with both the triquetrum and pisiform, and the triquetrum facet on the hamate is relatively proximodistally oriented in dorsal view. The Nacholapithecus capitate possesses a moderate distopalmar hook-like process and separated radial articular facets for the trapezoid and the second metacarpal due to the carpometacarpal ligament attachment that is absent in the Proconsul capitate. Discussion: The carpal anatomy of Nacholapithecus is similar to that of the early Miocene hominoid Proconsul. However, Nacholapithecus wrist anatomy appears to exhibit slightly more emphasized stability. Am J Phys Anthropol 160:469–482, 2016.",
keywords = "hand, hominoid, proconsul, wrist",
author = "Naomichi Ogihara and Sergio Alm{\'e}cija and Masato Nakatsukasa and Yoshihiko Nakano and Yasuhiro Kikuchi and Yutaka Kunimatsu and Haruyuki Makishima and Daisuke Shimizu and Tomo Takano and Hiroshi Tsujikawa and Miyuki Kagaya and Hidemi Ishida",
year = "2016",
month = "7",
day = "1",
doi = "10.1002/ajpa.22984",
language = "English",
volume = "160",
pages = "469--482",
journal = "American Journal of Physical Anthropology",
issn = "0002-9483",
publisher = "Wiley-Liss Inc.",
number = "3",

}

TY - JOUR

T1 - Carpal bones of Nacholapithecus kerioi, a Middle Miocene Hominoid From Northern Kenya

AU - Ogihara, Naomichi

AU - Almécija, Sergio

AU - Nakatsukasa, Masato

AU - Nakano, Yoshihiko

AU - Kikuchi, Yasuhiro

AU - Kunimatsu, Yutaka

AU - Makishima, Haruyuki

AU - Shimizu, Daisuke

AU - Takano, Tomo

AU - Tsujikawa, Hiroshi

AU - Kagaya, Miyuki

AU - Ishida, Hidemi

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Objectives: The carpal bones of the middle Miocene hominoid Nacholapithecus kerioi are described based on new materials. Materials and Methods: The materials comprise a trapezoid, three capitates, two hamates, a centrale, a lunate, a triquetrum, and a pisiform, collected during the 2001 and 2002 field seasons from Nachola, Kenya. We also describe a pisiform recently assigned to the type specimen of N. kerioi, KNM-BG 35250. Results: In the Nacholapithecus wrist, the ulnar styloid process articulates with both the triquetrum and pisiform, and the triquetrum facet on the hamate is relatively proximodistally oriented in dorsal view. The Nacholapithecus capitate possesses a moderate distopalmar hook-like process and separated radial articular facets for the trapezoid and the second metacarpal due to the carpometacarpal ligament attachment that is absent in the Proconsul capitate. Discussion: The carpal anatomy of Nacholapithecus is similar to that of the early Miocene hominoid Proconsul. However, Nacholapithecus wrist anatomy appears to exhibit slightly more emphasized stability. Am J Phys Anthropol 160:469–482, 2016.

AB - Objectives: The carpal bones of the middle Miocene hominoid Nacholapithecus kerioi are described based on new materials. Materials and Methods: The materials comprise a trapezoid, three capitates, two hamates, a centrale, a lunate, a triquetrum, and a pisiform, collected during the 2001 and 2002 field seasons from Nachola, Kenya. We also describe a pisiform recently assigned to the type specimen of N. kerioi, KNM-BG 35250. Results: In the Nacholapithecus wrist, the ulnar styloid process articulates with both the triquetrum and pisiform, and the triquetrum facet on the hamate is relatively proximodistally oriented in dorsal view. The Nacholapithecus capitate possesses a moderate distopalmar hook-like process and separated radial articular facets for the trapezoid and the second metacarpal due to the carpometacarpal ligament attachment that is absent in the Proconsul capitate. Discussion: The carpal anatomy of Nacholapithecus is similar to that of the early Miocene hominoid Proconsul. However, Nacholapithecus wrist anatomy appears to exhibit slightly more emphasized stability. Am J Phys Anthropol 160:469–482, 2016.

KW - hand

KW - hominoid

KW - proconsul

KW - wrist

UR - http://www.scopus.com/inward/record.url?scp=84974722810&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84974722810&partnerID=8YFLogxK

U2 - 10.1002/ajpa.22984

DO - 10.1002/ajpa.22984

M3 - Article

C2 - 27000381

AN - SCOPUS:84974722810

VL - 160

SP - 469

EP - 482

JO - American Journal of Physical Anthropology

JF - American Journal of Physical Anthropology

SN - 0002-9483

IS - 3

ER -