Exceptionally-preserved Middle Ordovician sponges from the Llandegley Rocks lagerstätte, Wales

Botting, J. P. (2005) Exceptionally-preserved Middle Ordovician sponges from the Llandegley Rocks lagerstätte, Wales. Palaeontology, 48 (3). pp. 577-617. DOI 10.1111/j.1475-4983.2005.00470.x

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Abstract

A diverse fauna of three-dimensionally preserved sponges is described from nearshore volcanogenic sandstones near Llandrindod, Mid-Wales. The fauna was preserved through early marginal silicification, in rare examples with silicification of soft tissue, and includes aspicular and spicular demosponges, hexactinellids, and a heteractinid. The fauna is largely endemic, with the following new species, genera and families erected: Onerosiconcha gregalia gen. et sp. nov., Ordinisabulo quadragintaforma gen. et sp. nov., Miritubus erinaceus gen. et sp. nov., Vadosifistula milvus gen. et sp. nov., Polycornua trescelestus gen. et sp. nov. (Pseudolanciculidae fam. nov.), P. entropus sp. nov., Palaeocallyoides improbabilis gen. et sp. nov., Reticulicymbalum tres gen. et sp. nov., Triactinella rigbyi gen. et sp. nov. (Triactinellidae, fam. nov.), Spissiparies minuta gen. nov., Brevicirrus arenaceus gen. et sp. nov., Pyritonema scopula sp. nov. (Pyritonemidae, fam. nov.) and Microastraeum tenuis gen. et sp. nov. In addition, Pseudolancicula Webby and Trotter is recorded outside Australia for the first time, although only as isolated spicules. The environment represented by this fauna has not previously yielded articulated sponges, and thus the apparent endemism may be misleading.

Item Type: Article
Uncontrolled Keywords: 2005 AREP IA44A IA48 2005 P
Subjects: 04 - Palaeobiology
Divisions: 04 - Palaeobiology
Journal or Publication Title: Palaeontology
Volume: 48
Page Range: pp. 577-617
Identification Number: 10.1111/j.1475-4983.2005.00470.x
Depositing User: Sarah Humbert
Date Deposited: 02 Sep 2011 10:03
Last Modified: 23 Jul 2013 09:58
URI: http://eprints.esc.cam.ac.uk/id/eprint/1586

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