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Geological Society, London, Special Publications; 1967; v. 2; p. 347-378;
DOI: 10.1144/GSL.SP.1967.002.01.28
© 1967 Geological Society of London

Invertebrata

Chapter 10 Coelenterata

G. A. L. Johnson, Ph.D. F.G.S., I. D. Sutton, Ph.D., F. M. Taylor, Ph.D. F.G.S. & G. Thomas, Ph.D. D.I.C. F.G.S.

Department of Geology, University Science Laboratories, South Road, Durham
Department of Geology, The University, Nottingham
Department of Geology, The University, Nottingham
Department of Geology, Imperial College of Science & Technology, Prince Consort Road, London S W 7

Class PROTOMEDUSAE Caster 1945

Order BROOKSELLIDA Harrington & Moore 1956

First, Pre-Camb Varang: Brooksella canyonensis Bassler, Nankoweap group, Algonkian, Grand Canyon, Arizona (Bassler 1941, Van Gundy 1951). Allegedly older medusoid fossils from Grand Canyon described by Alf 1959 probably inorganic and/or algal in origin (see Glaessner 1962, pp. 479, 493).

Last, Ord Arenig: Brooksella silurica (von Huene), "oberen rothen Orthocerenkalk", Kärgarde, Dalarna, Sweden (von Huene 1904), and ?Brooksella cambria (? = Staurophyton bagnolensis Meunier 1891), "Grès Armoricains" (of uncertain L. Ord age), Bagnoles (Orne), France (Meunier 1891). Reference to Laotira sp. [now Brooksella] from Penn of Sinai, Egypt (Couyat & Fritel 1912) not substantiated by figs. or descriptions; Avnimelech (1966) suggests it is Duodecimedusina, describes D. aegyptiaca Avnimelech from Carb ?Namur, Um Bogma fm., Eastern Desert, Egypt, and places genus Duodecimedusina in Protomedusae.

Comment: Classification here follows Treatise F, but designations are subjective and uncertain. One family, Brooksellidae Walcott. Only other records: "Star cobbles", B. cambria and B. alternata, M. Camb, Conasauga sh, Olenoides—Marumia Z., Coosa Valley, Alabama (Walcott 1898); B. cambria, U. Camb, Grove Creek member, Boysen fm, Wind River Canyon, Wyoming (Caster 1942b).

Class SCYPHOZOA Götte 1887

General Comment: Taxa as in Treatise pt F, but classification of fossil medusae subjective and uncertain, as emphasized by Glaessner & Wade (1966).

Subclass SCYPHOMEDUSAE Lankester 1881

Order STAUROMEDUSIDA Haeckel 1880

Extant only; comprises Tesseranthidae Haeckel, Eleutherocarpidae Clark, Cleistocarpidae Clark; No known fossil represntatives; Present distribution, cold seas.

Order CARYBDEIDA Claus 1886

First, Jur ‘Tith’: Quadrimedusina quadrata (Haeckel), Solnhofen Lst (M.

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This 250-word extract was created in the absence of an abstract.