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The Rugosa, so named for their 'wrinkled' chamber walls, are a group of solitary and colonial corals restricted to the Palaeozoic. There were both colonial and solitary forms, which are often referred to as horn corals. Where radiating septa are present, these usually exhibit fourfold symmetry; for this reason the Rugosa have also been called Tetracoralla.

Some examples of the rich fossil history of the rugose corals can be seen by clicking on the thumbnails below, photographed from the Bristol University teaching collection:

Calamophyllia stokesi (Edw. & Haime)

Corallian Fm., Jurassic, Steeple Ashton.

Calamophyllia: M. Jurassic - Cretaceous of Eurasia, Africa, N. America

Lithostrotion portlocki (Bronn)

Visean D., Arbigland, Dumfriesshire.

Lithostrotion: L. Carboniferous - L. Permian, Worldwide

Ketophyllum turbinatum (Linnaeus)

Wenlock Limestone Middle Silurian ? Wenlock Genotype

Ketophyllum (Omphya): Middle - Upper Silurian, Eurasia

"Cyathophyllum" sp.

Devonian, Torquay. Polished section.

"Cyathophyllum:" Middle Devonian, Europe

Lonsdaleia floriformis crassiconus (Smith)

Visean D2 Avon Gorge, Bristol

Lonsdaleia: Lower - Middle Carboniferous, Europe, Asia, Australia, North America

Acervularia ananas (Linnaeus)

Wenlock Limestone, Middle Silurian, Shropshire

Lonsdaleia: Lower - Middle Carboniferous, Europe, Asia, Australia, North America

Author: Ben Kotrc
Last updated: 21 November 2005
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Websites produced by students on the MSc Palaeobiology programme in the Department of Earth Sciences at the University of Bristol for academic year 2005-6