eprintid: 10092913
rev_number: 14
eprint_status: archive
userid: 608
dir: disk0/10/09/29/13
datestamp: 2020-06-10 15:08:01
lastmod: 2021-11-07 00:26:30
status_changed: 2020-06-10 15:08:01
type: article
metadata_visibility: show
creators_name: Porro, LB
creators_name: Rayfield, EJ
creators_name: Clack, JA
title: Descriptive Anatomy and Three-Dimensional Reconstruction of the Skull of the Early Tetrapod Acanthostega gunnari Jarvik, 1952
ispublished: pub
divisions: UCL
divisions: B02
divisions: C08
divisions: D09
divisions: F96
keywords: Skull, Jaw, Teeth, Computed axial tomography, Maxilla, Cranium, Joints (anatomy), Symphyses
note: Copyright: © 2015 Porro et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
abstract: The early tetrapod Acanthostega gunnari is an iconic fossil taxon exhibiting skeletal morphology reflecting the transition of vertebrates from water onto land. Computed tomography data of two Acanthostega skulls was segmented using visualization software to digitally separate bone from matrix and individual bones of the skull from each other. A revised description of cranial and lower jaw anatomy in this taxon based on CT data includes new details of sutural morphology, the previously undescribed quadrate and articular bones, and the mandibular symphysis. Sutural morphology is used to infer loading regime in the skull during feeding, and suggests Acanthostega used its anterior jaws to initially seize prey while smaller posterior teeth were used to restrain struggling prey during ingestion. Novel methods were used to repair and retrodeform the skull, resulting in a three-dimensional digital reconstruction that features a longer postorbital region and more strongly hooked anterior lower jaw than previous attempts while supporting the presence of a midline gap between the nasals and median rostrals.
date: 2015-03-11
date_type: published
publisher: PUBLIC LIBRARY SCIENCE
official_url: https://doi.org/10.1371/journal.pone.0118882
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1580891
doi: 10.1371/journal.pone.0118882
lyricists_name: Porro, Laura
lyricists_id: LBPOR42
actors_name: Porro, Laura
actors_id: LBPOR42
actors_role: owner
full_text_status: public
publication: PLOS ONE
volume: 10
number: 3
article_number: e0118882
pages: 32
citation:        Porro, LB;    Rayfield, EJ;    Clack, JA;      (2015)    Descriptive Anatomy and Three-Dimensional Reconstruction of the Skull of the Early Tetrapod Acanthostega gunnari Jarvik, 1952.                   PLOS ONE , 10  (3)    , Article e0118882.  10.1371/journal.pone.0118882 <https://doi.org/10.1371/journal.pone.0118882>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10092913/1/Descriptive%20anatomy%20and%20three-dimensional%20reconstruction%20of%20the%20skull%20of%20the%20early%20tetrapod%20Acanthostega%20gunnari%20Jarvik%2C%20195.pdf