Timothy R. Smithson
University of Cambridge
30 Papers
1 Citations
Timothy R. Smithson is an academic researcher from University of Cambridge. The author has contributed to research in topics: Carboniferous & Tetrapod (structure). The author has an hindex of 12, co-authored 28 publications.
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Papers
Phylogenetic and environmental context of a Tournaisian tetrapod fauna
Jennifer A. Clack,Carys E. Bennett,David K. Carpenter,Sarah J. Davies,Nicholas N. Fraser,Timothy I. Kearsey,John E. A. Marshall,David Millward,Benjamin K. A. Otoo,Benjamin K. A. Otoo,Emma J. Reeves,Andrew J. Ross,Marchella Ruta,Ketutah Z. Smithson,Timothy R. Smithson,Stig A. Walsh +15 more
TL;DR: It is shown that atmospheric oxygen levels were stable across the Devonian/Carboniferous boundary, and did not inhibit the evolution of terrestriality, which suggests that tetrapod diversification was well established by the Tournaisian.
Functional adaptive landscapes predict terrestrial capacity at the origin of limbs.
TL;DR: Analysis of humeri from fossils that span the fin-to-limb transition reveal that the change in the humerus shape is driven by both ecology and phylogeny, and is associated with functional trade-offs related to locomotor performance.
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A fish and tetrapod fauna from Romer's Gap preserved in Scottish Tournaisian floodplain deposits
Benjamin K. A. Otoo,Jennifer A. Clack,Timothy R. Smithson,Carys E. Bennett,Timothy I. Kearsey,Michael I. Coates +5 more
TL;DR: In this article, the authors report on a Tournaisian vertebrate fauna from a well-characterized, narrow stratigraphic interval from the Ballagan Formation exposed at Burnmouth, Scotland.
24
A Lungfish survivor of the end-Devonian extinction and an Early Carboniferous dipnoan radiation.
Thomas J. Challands,Timothy R. Smithson,Jennifer A. Clack,Carys E. Bennett,John E. A. Marshall,Sarah M. Wallace-Johnson,Henrietta Hill +6 more
TL;DR: The immediate aftermath of the Hangenberg event of the Famennian Stage (Upper Devonian) was considered to have decimated sarcopterygian groups, including lungfish, with only two taxa.
A new tetrapod from Romer's Gap reveals an early adaptation for walking
TL;DR: A comparative analysis of this new material and other tetrapodomorph humeri revealed how an increase in humeral torsion transformed the course of the brachial artery and median nerve through the bone, from an entirely ventral path to one in which the blood vessel and nerve passed through the entepicondyle from the dorsal to the ventral surface.