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Petalaxis
Taxonomy
Petalaxis was named by Milne-Edwards and Haime (1852) [Sepkoski's age data: C Vise-u C Mosc Sepkoski's reference number: 856,1240]. It is not extant.
It was synonymized subjectively with Lithostrotion by Hill (1956).
It was assigned to Rugosa by Sepkoski (2002); and to Petalaxidae by Sando (1983), Bamber and Fedorowski (1998) and Fedorowski et al. (2007).
It was synonymized subjectively with Lithostrotion by Hill (1956).
It was assigned to Rugosa by Sepkoski (2002); and to Petalaxidae by Sando (1983), Bamber and Fedorowski (1998) and Fedorowski et al. (2007).
Species
P. allisonae, P. baculatus, P. bailliei, P. beauchampi, P. belinskiensis, P. besti (syn. P. kennedyi, P. pecki), P. branisai, P. cantabrica, P. celadensis, P. confertus, P. crassicolumnus, P. dobrolyuhovae, P. donbassica, P. donetsensis, P. ellesmerensis, P. elyensis (syn. Lithostrotionella brokawi), P. evidens, P. exiguus, P. exilis, P. flexuosus, P. fomichevi, P. grootae, P. immanis, P. intermedius, P. ivanovi, P. korkhovae, P. lisitschanskensis, P. maccoyanus, P. major, P. mirus, P. mohikanus, P. mokomokensis, P. monocyclicus, P. multilamellatus, P. occidentalis, P. orboensis, P. parvus, P. perapertuensis, P. persubtilis, P. radians, P. santaemariae, P. sexangulus, P. simplex, P. stylaxis, P. sutherlandi, P. tabulatus, P. taishakuensis, P. thorsteinssoni, P. tschucoticus, P. vesiculosus, P. wagneri, P. wyomingensis
Species lacking formal opinion data
Synonyms
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Synonymy list
Year | Name and author |
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1852 | Petalaxis Milne-Edwards and Haime |
1983 | Petalaxis Sando pp. 23 - 25 |
1984 | Grootia Yu |
1998 | Petalaxis Bamber and Fedorowski |
2002 | Petalaxis Sepkoski |
2007 | Petalaxis Fedorowski et al. p. 161 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Petalaxis Milne-Edwards and Haime 1852
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†Petalaxis allisonae Wilson 1982
†Petalaxis baculatus Bamber and Fedorowski 1998
†Petalaxis bailliei Nelson 1960
†Petalaxis beauchampi Bamber and Fedorowski 1998
†Petalaxis belinskiensis Fomichev 1953
†Petalaxis besti Wilson 1982
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Invalid names: Petalaxis kennedyi Wilson 1982 [synonym], Petalaxis pecki Wilson 1982 [synonym]
†Petalaxis branisai Wilson 1990
†Petalaxis cantabrica de Groot 1963
†Petalaxis celadensis de Groot 1963
†Petalaxis confertus Kozyreva 1974
†Petalaxis crassicolumnus Bamber and Fedorowski 1998
†Petalaxis dobrolyuhovae Sando 1983
†Petalaxis donbassica Fomichev 1939
†Petalaxis donetsensis Sando 1983
†Petalaxis ellesmerensis Bamber and Fedorowski 1998
†Petalaxis elyensis Wilson and Langenheim, Jr. 1962
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Invalid names: Lithostrotionella brokawi Wilson and Langenheim, Jr. 1962 [synonym]
†Petalaxis evidens Kozyreva 1974
†Petalaxis exiguus Sando 1983
†Petalaxis exilis Kozyreva 1974
†Petalaxis flexuosus Trautschold 1879
†Petalaxis fomichevi Sando 1983
†Petalaxis grootae Sando 1983
†Petalaxis immanis Kozyreva 1974
†Petalaxis intermedius de Groot 1963
†Petalaxis ivanovi Dobrolyubova 1935
†Petalaxis korkhovae Kozyreva 1974
†Petalaxis lisitschanskensis Fomichev 1953
†Petalaxis maccoyanus Milne-Edwards and Haime 1851
†Petalaxis major de Groot 1963
†Petalaxis mirus Kozyreva 1974
†Petalaxis mohikanus Fomichev 1939
†Petalaxis mokomokensis Easton 1960
†Petalaxis monocyclicus de Groot 1963
†Petalaxis multilamellatus Bamber and Fedorowski 1998
†Petalaxis occidentalis Merriam 1942
†Petalaxis orboensis de Groot 1963
†Petalaxis parvus Bamber and Fedorowski 1998
†Petalaxis perapertuensis de Groot 1963
†Petalaxis persubtilis Kozyreva 1974
†Petalaxis radians de Groot 1963
†Petalaxis santaemariae de Groot 1963
†Petalaxis sexangulus de Groot 1963
†Petalaxis simplex Hayasaka 1936
†Petalaxis stylaxis Trautschold 1879
†Petalaxis sutherlandi Wilson 1982
†Petalaxis tabulatus Hayasaka 1936
†Petalaxis taishakuensis Yokoyama 1957
†Petalaxis thorsteinssoni Bamber and Fedorowski 1998
†Petalaxis tschucoticus Onoprienko 1976
†Petalaxis vesiculosus Dobrolyubova 1935
†Petalaxis wagneri de Groot 1963
†Petalaxis wyomingensis Sando 1983
Invalid names: Grootia Yu 1984 [synonym]
Diagnosis
Reference | Diagnosis | |
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W. J. Sando 1983 | Cerioid colonial corals with tabular to hemispherical growth form. Septa of two ordersĀ·. Major septa thin, ordinarily extending into the tabularium but seldom reaching the columella and ordinarily discon-tinuous or absent in the dissepimentarium, but species with weakly lonsdaleoid dissepimentarium are known. Minor septa absent to well developed. Columella or-dinarily a simple axial plate joined to counter and (or) cardinal septum but composed of axial plate, impersis-tent vertical axial tabellae, and a few axial lamellae in some species. Tabulae complete and incomplete, essen-tially horizontal, flat, concave, or convex, turned up at columella in some species. Peripheral clinotabellae may be present. Dissepimentarium ordinarily lonsdaleoid but may be mostly regular in some species. Increase peripheral and intermural. |