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Invertebrata |
Department of Zoology, The University, Glasgow 2, Scotland
Hunterian Museum. The University, Glasgow 2, Scotland
Department of Zoology, Downing Street, Cambridge
Royal Scottish Museum, Edinburgh 1, Scotland
Geology Department, University of New England, Armidale, New South Wales, Australia
Department of Zoology, The University, Exeter, Devon
The classification of Novozhilov (in Rohdendorf 1962b) is used here without prejudice.
First, Camb L.Camb: Paleomerus hamiltoni Størmer, Kinnekulle, Sweden (Størmer 1955). The first form assigned to the order without doubt is Beckwithia typa Resser M.Camb: Marjum Fm, Weeks Canyon, Utah (Raasch 1939).
Last, Ord Carad: Neostrabops martini Caster and Macke, Maysville Fm, Ohio (Caster and Macke 1952).
First and Last, Ord Llvirn?: monotypic order known from Chasmataspis laurencii Caster and Brooks, sediments in the Chazyan hiatus of Canada, Tennessee, U.S.A. (Caster and Brooks 1956).
First, Sil Wenl: Neolimulus falcatus Woodward and Cyamocephalus loganensis Currie, Logan Water, Lanarkshire, Scotland (Woodward 1868, Currie 1927).
Last, Dev Siegen: Weinbergina opitzi Richter and Richter, Hunsrückschiefer, Rheinland, Germany (Richter and Richter 1929).
First, Dev Gedinn: Kiaeria limuloides Størmer, Downtonian, Ringerike, Norway (Størmer 1934). Extant.
Comment: Represented by extant species belonging to the genera Limulus, Tachypleus and Carcinoscorpius.
The classification of Caster and Kjellesvig-Waering (1964) is used here without prejudice.
First, Ord Arenig-Llvirn: Eocarcinosoma ruedemanni (Flower), Deepkill Fm, Rensselair Co., New York State (Flower 1945).
Last, Carb Moscov: Mycterops ordinatus Cope, Allegheny Fm, Beaver Co., Pennsylvania and Mycterops mathieui (Pruvost), Westphalian, Belgium (Kjellesvig-Waering 1963).
Constituent families: Megalograptidae Caster and Kjellesvig-Waering, Ord Carad-Ashg; Mixopteridae Caster and Kjellesvig-Waering, Sil Wenl-Dev Gedinn; Carcinosomatidae Størmer, Ord Arenig-Llvirn-Dev Gedinn; Mycteropidae Cope, Carb Moscov.
Last, Carb Moscov: Mazonipterus cyclophthalmus Kjellesvig-Waering, Carbondale Fm, Mazon Creek, Illinois and Hibbertopterus? potens (Hall) Allegheny Fm, Pennsylvania (Kjellesvig-Waering 1963).
Constituent families: Dolichopteridae Kjellesvig-Waering and Størmer, Ord Arenig-Llvirn-Dev Siegen; Stylonuridae Diener, Ord Carad-Carb Moscov; Rhenopteridae Størmer, Dev Siegen-Givet; Woodwardopteridae Kjellesvig-Waering, L. Dev-Carb Viséan; Hibbertopteridae Kjellesvig-Waering, Dev Famenn?-Perm.
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This 250-word extract was created in the absence of an abstract.