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Pachytestopsis tayloriorum gen. et sp. nov., an anatomically preserved glossopterid seed from the Lopingian of Queensland, Australia
Swedish Museum of Natural History, Department of Paleobiology.ORCID iD: 0000-0001-6723-239X
Westfälische Wilhelms-Universität, Münster, Germany.ORCID iD: 0000-0002-2186-4970
School of Biosciences, The University of Melbourne, Parkville, Victoria, Australia.
2018 (English)In: Transformative Paleobotany: Papers to Commemorate the Life and Legacy of Thomas N. Taylor / [ed] Krings, M., Harper, C.J., Cúneo, N.R., Rothwell, G.W., Amsterdam: Elsevier, 2018, p. 155-178Chapter in book (Refereed)
Abstract [en]

A permineralized seed, Pachytestopsistayloriorum gen. et sp. nov., is described from the Changhsingian (upper Permian) Fort Cooper Coal Measures at the Homevale locality in the northern Bowen Basin, Queensland,Australia. This largest permineralized seed species yet recorded from Permian deposits of Gondwana conforms to a size accommodated by either Rigbyaceae or Lidgettoniaceae (glossopterid) fructifications recorded elsewhere in the Sydney-Bowen basin complex. The seeds are characterized by a thin endotesta of longitudinally orientated cells, thick mesotesta incorporating an inner band of very thick walled sclereids and an outer layer of thin-walled parenchymatous cells, and an exotesta that comprises a well-developed epidermis and several layers of thick-walled hypodermal cells. Vascular supply to the base of the seed passes through the integument and bifurcates into the nucellar pad. Taeniate bisaccate pollen of Protohaploxypinus-type occurs in the pollen chamber of the seed. A comparison of the characters of P. tayloriorum with other permineralized seeds from the Permian of Gondwana indicates that several of the characters used in previous phylogenetic analyses incorporating glossopterids are wrongly scored or ambiguous in their definition.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2018. p. 155-178
National Category
Other Earth and Related Environmental Sciences
Research subject
The changing Earth
Identifiers
URN: urn:nbn:se:nrm:diva-2904DOI: 10.1016/B978-0-12-813012-4.00009-7ISBN: 9780128130124 (print)OAI: oai:DiVA.org:nrm-2904DiVA, id: diva2:1257956
Funder
Swedish Research Council, 2014-5232Swedish Research Council, 2014-5234
Note

Other funding from:

Australian Research Council [grant number DP0557828]

National Science Foundation (project 1636625)

Deutsche Forschungsgemeinschaft (DFG project BO3131/1-1)

Available from: 2019-01-01 Created: 2018-10-23 Last updated: 2019-01-08Bibliographically approved

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