A new tetrapod from Romer's Gap reveals an early adaptation for walking

@article{Smithson2017ANT,
  title={A new tetrapod from Romer's Gap reveals an early adaptation for walking},
  author={Timothy R. Smithson and Jennifer Alice Clack},
  journal={Earth and Environmental Science Transactions of the Royal Society of Edinburgh},
  year={2017},
  volume={108},
  pages={89 - 97}
}
  • T. Smithson, J. Clack
  • Published 1 March 2017
  • Biology
  • Earth and Environmental Science Transactions of the Royal Society of Edinburgh
ABSTRACT A new early tetrapod, Mesanerpeton woodi gen. et sp. nov., collected by Stan Wood from the Ballagan Formation, Tournaisian CM palynozone, at Willie's Hole, Scottish Borders, is described. It includes vertebrae like those of Crassigyrinus, with poorly developed neural arches, a well ossified ulna with a large olecranon, and a humerus that is structurally intermediate between the pleisiomorphic condition of Devonian taxa and that of all later forms. A comparative analysis of this new… 

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Stan Wood was an exceptional fossil collector who, over a collecting career of more than 40 years, provided British palaeontology with an abundance and variety of new Carboniferous fossils, the like

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ABSTRACT Stan Wood was an exceptional fossil collector who, over a collecting career of more than 40 years, provided British palaeontology with an abundance and variety of new Carboniferous fossils,

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References

SHOWING 1-10 OF 53 REFERENCES

An amniote-like skeleton from the Early Carboniferous of Scotland

TLDR
A small, highly ossified, postcranial skeleton of a terrestrially adapted, amniote-like tetrapod from the Mid Viséan is reported, which shows the earliest known pentadactyl manus and pushes back the known occurrence of terrestrial vertebrates closer to the origin of tetrapods.

Earliest Carboniferous tetrapod and arthropod faunas from Scotland populate Romer's Gap

TLDR
It is concluded that the gap in the fossil record has been an artifact of collection failure and a series of discoveries of Tournaisian-age localities in Scotland that have yielded a wealth of new tetrapod and arthropod fossils.

Pederpes finneyae, an articulated tetrapod from the tournaisian of Western Scotland

TLDR
The postcranial skeleton of Pederpes shows several unique features, including the structure of the leading edges of the cleithrum and clavicle, the form of the rib flanges and a possible supernumerary digit on the manus.

IX.—The Postcranial Skeleton of Ensthenopteron foordi Whiteaves

TLDR
A functional analysis of the skeleton of Ensthenopteron is attempted, suggesting that it resembled the pike in its mode of life and that it may have been capable of short journeys “walking” overland.

The humerus of Ossinodus pueri, a stem tetrapod from the Carboniferous of Gondwana, and the early evolution of the tetrapod forelimb

TLDR
Re-examination and further preparation of other, previously described pectoral appendicular elements of Ossinodus reveals that they too record direct evidence of muscle attachment, which sheds much new light on the early evolution of the tetrapod forelimb.

On the Amphibian Crassigyrinus scoticus Watson from the Carboniferous of Scotland

TLDR
A case is made for the 'sister-group' relation of Crassigyrinus to the anthracosauroids and a cladogram presented of the subgroups involved; it is, however, difficult to make a case for the close relationship of CrASSIGyrinus and the Seymouriamorpha and the closeness of relationship of the latter to anthracosaurs is questioned.

The postcranial skeleton of the Devonian tetrapod Tulerpeton curtum Lebedev

TLDR
A cladistic analysis indicates that Tulerpeton is a reptiliomorph stem-group amniote and the earliest known crown-group tetrapod: Acanthostega and Ichthyostega are successively more derived plesion stem- group tetrapods and do not consititute a monophyletic ichthyostegalian radiation.

Humeral homology and the origin of the tetrapod elbow : a reinterpretation of the enigmatic specimens ANSP 21350 and GSM 104536

Two putative tetrapod humeri of Devonian age, ANSP 21350 from the late Famennian of Pennsylvania and GSM 104536 from the late Frasnian of Scat Craig, Scotland, are reinterpreted in the light of more

The pelvic girdle and hind limb of Crassigyrinus scoticus (Lydekker) from the Scottish Carboniferous and the origin of the tetrapod pelvic skeleton

  • A. PanchenT. Smithson
  • Environmental Science
    Transactions of the Royal Society of Edinburgh: Earth Sciences
  • 1990
TLDR
A skeletal reconstruction and a life restoration of Crassigyrinus are presented in the light of its reconstructed anatomy and physiology, which suggests that the bone may be at least in part dermal and its homology wtih the pelvic fin basal scute of osteolepiform fishes is proposed.

The postcranial skeletal anatomy of the carboniferous tetrapod Greererpeton burkemorani Romer, 1969

TLDR
A cladistic analysis indicates that Greererpeton burkemorani shares a more recent common ancestor with the anthracosaur Proterogyrinus scheelei than it does with either Crassigyrinus scoticus or Ichthyostega sp.
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