Teganium (Porifera, Hexactinellida) from the Middle Ordovician Castle Bank fauna of Avalonia (Wales, UK)

doi:10.26879/1247

	Teganium (Porifera, Hexactinellida) from the Middle Ordovician Castle Bank fauna of Avalonia (Wales, UK)
	Botting, Joseph P.1,2; Muir, Lucy A.2; Ma, Junye 1
刊名	PALAEONTOLOGIA ELECTRONICA
	2023-05-22
页码	17
ISSN号	1935-3952
DOI	10.26879/1247
通讯作者	Botting, Joseph P.(acutipuerilis@yahoo.co.uk)
英文摘要	The hexactinellid sponges Teganium and Teganiella are widespread in Ordovi-cian, Devonian and Carboniferous strata in Laurentia, but have not previously been reported outside that palaeocontinent; some other members of the family Teganiidae are also restricted to Laurentia. The genus Teganiella in particular is considered to be a Laurentian endemic, with all species specialised for equatorial, shallow-water condi-tions. However, it is now clear that the diagnostic separation of Teganiella from Tega-nium was based on misunderstanding of the latter, and Teganiella should be considered a junior synonym. Based on this prior distribution, the discovery of two new species of Teganium (T. avalonensis sp. nov. and Teganium sp.) from the Middle Ordo-vician (Didymograptus murchisoni Biozone) of Castle Bank, Wales, is unexpected. These species are the oldest known and indicate diversification of the genus within a temperate microcontinent, prior to its appearance in Laurentia. The exceptional preser-vation of the new sponges also reveals detail of a complex body wall, supporting a more derived phylogenetic position within Hexactinellida (possibly affiliated to the Lys-sacinosida) than previously recognised. The palaeobiogeography may suggest a rela-tively deep-water origin for the group (as for modern hexactinellids), which then became secondarily specialised for shallow-water environments within a Laurentian diversification.
WOS关键词	BUILTH INLIER ; SPONGE ; DIVERSITY ; BIOGEOGRAPHY ; MICROFOSSILS ; BIOTA ; SHALE
WOS研究方向	Paleontology
语种	英语
出版者	COQUINA PRESS
WOS记录号	WOS:001012178700001
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/42455]
专题	中国科学院南京地质古生物研究所
通讯作者	Botting, Joseph P.
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Peoples R China 2.Amgueddfa Cymru Natl Museum Wales, Dept Nat Sci, Cathays Pk, Cardiff CF10 3NP, Wales
推荐引用方式 GB/T 7714	Botting, Joseph P.,Muir, Lucy A.,Ma, Junye. Teganium (Porifera, Hexactinellida) from the Middle Ordovician Castle Bank fauna of Avalonia (Wales, UK)[J]. PALAEONTOLOGIA ELECTRONICA,2023:17.
APA	Botting, Joseph P.,Muir, Lucy A.,&Ma, Junye.(2023).Teganium (Porifera, Hexactinellida) from the Middle Ordovician Castle Bank fauna of Avalonia (Wales, UK).PALAEONTOLOGIA ELECTRONICA,17.
MLA	Botting, Joseph P.,et al."Teganium (Porifera, Hexactinellida) from the Middle Ordovician Castle Bank fauna of Avalonia (Wales, UK)".PALAEONTOLOGIA ELECTRONICA (2023):17.