Preview

PDF 1992_Clarke_A_N...pdf | Download (273kB) Available under University of Tasmania Standard License. | Preview

Abstract

Farmerella exoporosa gen. et sp.nov. is described from cold-water Permian (Bernacchian-Lymingtonian) rocks of Tasmania. The new taxon is essentially homeomorphic with Glendonia McClung & Armstrong, 1978. However, Glendonia possesses a micro-ornament of low, elongate microspines behind shallow, elongate grooves, whereas Farmerella gen.nov. (as in Notospirifir Harrington, 195 5) has deep, elongate and globose pits which penetrate the rhickened outer primary shell layer but not the inner shell layer. This feature suggests that Notospirifir and Farmerell.a gen.nov. are closely related and should be assigned to a separate subfamily, the Notospiriferinae Archbold & Thomas, 1986 (emended herein), and Glendonia, BirchsellaClarke, 1987 and KelsoviaClarke, 1990 to a separate subfamily, the Glendoniinae nov. The areal and stratigraphical distributions, and evolutionary relationships of the various genera are briefly discussed.

Item Type:	Article
Authors/Creators:	Clarke, MJ
Keywords:	Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library
Journal or Publication Title:	Papers and Proceedings of the Royal Society of Tasmania
ISSN:	0080-4703
DOI / ID Number:	https://doi.org/10.26749/rstpp.126.73
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	Copyright Royal Society of Tasmania
Item Statistics:	View statistics for this item

Actions (login required)

Item Control Page