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Two newly identified cheiracanthid acanthodians from the Mey Flagstone Formation (Givetian, Middle Devonian) of the Orcadian Basin, Scotland

Autor: Michael J. Newman, Jan L. den Blaauwen, Carole J. Burrow

Publikováno v: Scottish Journal of Geology. 57

Articulated cheiracanthid acanthodians are relatively rare above the Dickosteus thrieplandi biostratigraphic zone in the Orcadian Basin, with Cheiracanthus peachi den Blaauwen, Newman & Burrow the only species identified to date. Here we describe two

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78a6cf2fa56c9590164d320070f6730b
https://doi.org/10.1144/sjg2020-009

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Demarcation of the boundary between Middle Devonian Upper Stromness Flagstone and Rousay Flagstone formations in Westray, Orkney

Autor: David Leather

Publikováno v: Scottish Journal of Geology. 53:53-61

The only official maps to show a boundary between the Middle Devonian Stromness and Rousay Flagstones on Orkney are those published by the Geological Survey in 1932 and 1935. Since then, the difficulties of defining and locating this boundary have ch

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https://doi.org/10.1144/sjg2017-007

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The vertebrate biostratigraphy of the Rousay sequence in the Middle Devonian of Orkney, Scotland

Autor: Uisdean McL Michie, Michael J. Newman, Jan L. den Blaauwen

Publikováno v: Scottish Journal of Geology. 51:149-156

Biostratigraphic zones based on fossil fish are identified within the Middle Devonian Rousay sequence in the upper part of the main lacustrine sequence of Orkney. The Rousay sequence forms the majority of the bedrock of Orkney and the original Geolog

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https://doi.org/10.1144/sjg2014-011

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On the phylogenetic position ofGogonasus andrewsae Long 1985, within the Tetrapodomorpha

Autor: Timothy Holland, John A. Long

Publikováno v: Acta Zoologica. 90:285-296

Within the Tetrapodomorpha, the Late Devonian Gogonasus andrewsae of the Gogo Formation, Gogo, Western Australia, has occupied an uncertain phylogenetic position. Following the description of several well-preserved three-dimensional skulls and pector

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d08b9abbc664beed277e9f68e384c4f
https://doi.org/10.1111/j.1463-6395.2008.00377.x

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Taphonomy of fish beds from the Upper Flagstone Group of the Middle Old Red Sandstone, Caithness

Autor: N. H. Trewin, R. F. M. Hamilton

Publikováno v: Scottish Journal of Geology. 30:175-181

Synopsis The taphonomy of Devonian lacustrine fish-beds from The Upper Flagstone Group of the Middle Old Red Sandstone of Caithness has been studied at Holborn Head and Lythmore near Thurso. The beds of carbonate/organic laminites are dominated by Os

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::337f2627863710d8e94c6020fe02649c
https://doi.org/10.1144/sjg30020175

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Correlation of the Achanarras and Sandwick Fish Beds, Middle Old Red Sandstone, Scotland

Autor: Nigel H. Trewin

Publikováno v: Scottish Journal of Geology. 12:205-208

The Achanarras Fish Bed of the Middle Old Red Sandstone of Caithness, separating the Lower and Upper Caithness Flagstone Groups of Donovan, Foster and Westoll (1974), has long been correlated with the Sandwick Fish Bed of Orkney which lies between th

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https://doi.org/10.1144/sjg12030205

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On the Structures of the Dermal Ethmoid Shield of Osteolepis

Autor: T. Stanley Westoll

Publikováno v: Geological Magazine. 73:157-171

SUMMARYThe structure of the fronto-ethmoid shield ofOsteolepis macrolepidotusAg. is described fully for the first time, and the homology of the dermal bones is discussed. The most interesting feature is the recognition of the existence of a sensory-c

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https://doi.org/10.1017/s0016756800097296

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The endocranium and associated structures in the Middle Devonian rhipidistian fish Osteolepis

Autor: Keith Stewart Thomson

Publikováno v: Proceedings of the Linnean Society of London. 176:181-195

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b471d3202f31b451ad4a2385befeb1c6
https://doi.org/10.1111/j.1095-8312.1965.tb00943.x

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3. On the Fossil Fishes of the Old Red Sandstone of Orkney

Autor: Traill

The author stated, that besides the original localities at Skaill, Ichthyolites have been found at Breckness, Quoyloo, and Kirkwall, in Pomona, in South Ronaldshay, and in Papa-Westray. The species already recognised from these localities are, 1. Ost

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https://zenodo.org/record/1829780

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Ancestry of the Tetrapods

Autor: T. Stanley Westoll

Publikováno v: Nature. 141:127-128

DURING the last few decades it has become increasingly clear that theTetrapods were derived from a group of fishes having their closest affinities with the Devonian Crossopterygii and Dipnoi. In 1932, Save-Soderbergh published a valuable description1

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https://doi.org/10.1038/141127a0

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