PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Petalaxis

Anthozoa - Stauriida - Petalaxidae

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), Fedorowski et al. (2007).

Species

P. allisonae, P. baculatus, P. bailliei, P. beauchampi, P. belinskiensis, P. besti (syn. P. pecki, P. kennedyi), 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

P. sandoi

Synonyms

Grootia was named by Yu (1984).

It was synonymized subjectively with Petalaxis by Fedorowski et al. (2007).

Synonymy list

Year	Name and author
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

Is something missing? Join the Paleobiology Database and enter the data

Rank	Name	Author
kingdom	Animalia	()
phylum	Cnidaria	Hatschek 1888
class	Anthozoa	Ehrenberg 1834
—	Hexacorallia	()

Rank	Name	Author
subclass	Rugosa	(Milne-Edwards and Haime 1850)
order	Stauriida	Verrill 1865
family	Petalaxidae	Fomichev 1953
genus	Petalaxis	Milne-Edwards and Haime 1852

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

show all | hide all

†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

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

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
W. J. Sando 1983	Cerioid colonial corals with tabular to hemispherical growth form. Septa of two orders·. 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.

Measurements

No measurements are available

Composition:

low Mg calciteo

Locomotion:

stationaryo

Attached:

yeso

Life habit:

epifaunalo

Diet:

suspension feedero

Vision:

blindc

Created:

2004-02-27 16:55:09

Modified:

2004-02-28 16:53:57

Source: o = order, c = class

Reference: Kiessling 2004

Age range: base of the Asbian to the top of the Kungurian or 339.90000 to 274.40000 Ma

Collections (85 total)

Time interval	Ma	Country or state	Original ID and collection number
Meramecian	342.9 - 335.4	Canada (Alberta)	Lithostrotionella bailliei (62569)
Asbian	339.9 - 335.9	United Kingdom (England)	Lithostrotion maccoyanum (73389 76661)
Asbian	339.9 - 335.9	Ireland	Lithostrotion maccoyanum (76713)
Asbian	339.9 - 335.9	Türkiye	Lithostrotion maccoyanum (134296)
Asbian - Brigantian	339.9 - 330.3	Morocco	Lithostrotion maccoyanum (99682 228328)
Brigantian	335.9 - 330.3	United Kingdom (England)	Lithostrotion maccoyanum (73390 73394 73399)
Brigantian	335.9 - 330.3	Ireland (Carlow)	Lithostrotion maccoyanum (79120 79122)
Brigantian	335.9 - 330.3	Morocco	Lithostrotion maccoyanum (79404)
Brigantian	335.9 - 330.3	Ireland	Lithostrotion maccoyanum (34833)
Serpukhovian	330.3 - 323.4	Japan	P. sp. (76322)
Serpukhovian	330.3 - 323.4	Morocco	Lithostrotion maccoyanum (234350)
Bashkirian	323.4 - 315.2	Japan	P. sp. (76321)
Bashkirian	323.4 - 315.2	China (Xinjiang)	P. kitakamiensis (234333)
Bashkirian - Moscovian	323.4 - 307.0	China (Nei Mongol)	Hillia intermedia (78558)
Moscovian	315.2 - 307.0	Ukraine	P. sp. (151328 151331)
Moscovian	315.2 - 307.0	Canada (Nunavut)	P. crassicolumnus, P. ellesmerensis, P. multilamellatus (76946) P. donbassicus (76928 76929 76931 76932 76958) P. ellesmerensis (76948) P. sp., P. crassicolumnus (76930) P. thorsteinssoni (76961 76962)
Moscovian	315.2 - 307.0	Japan	P. sandoi (67702)
Moscovian	315.2 - 307.0	Svalbard and Jan Mayen	P. sp. B, P. sp. C, P. sp. E (75724)
Kashirian	313.8 - 311.46	Canada (Nunavut)	P. crassicolumnus, P. beauchampi (76952) P. crassicolumnus, P. ellesmerensis (76954) P. mcoyanus, P. donbassicus, P. crassicolumnus (76951)
Kashirian - Podolskian	313.8 - 308.9	Canada (Nunavut)	P. crassicolumnus, P. ellesmerensis (76940 76942) P. ellesmerensis, P. beauchampi (76943)
Podolskian	311.46 - 308.9	Canada (Nunavut)	P. donbassicus (76965) P. ellesmerensis (76964) P. thorsteinssoni (76935)
Podolskian - Myachkovian	311.46 - 307.0	Canada (Nunavut)	P. thorsteinssoni (76966)
Myachkovian	308.9 - 307.0	Canada (Nunavut)	P. beauchampi (76936) P. thorsteinssoni (76945 76955)
Stephanian	307.4 - 300.3	China (Nei Mongol)	Hillia perapertuensis, Hillia intermedia (78560)
Kasimovian	307.0 - 303.7	Canada (Nunavut)	P. baculatus (76938) P. elyensis (76956) P. parvus (76967)
Asselian	298.9 - 293.52	Canada (British Columbia)	P. besti (107896 107900 107952) P. sutherlandi (107919 107920)
Asselian	298.9 - 293.52	USA (Nevada)	Eastonoides elyensis, Lithostrotionella brokawi (120692) P. elyensis (108113)
Asselian	298.9 - 293.52	USA (California)	P. allisonae (62663) P. besti (62671 62672)
Asselian	298.9 - 293.52	China (Guangxi)	Grootia sp. (95831 95839)
Asselian - Sakmarian	298.9 - 290.1	USA (California)	P. occidentalis (118835)
Sakmarian	293.52 - 290.1	USA (California)	P. exiguus (108149) P. kennedyi (62677 62678 62682) P. kennedyi, P. pecki (62683) P. occidentalis (107846) P. pecki (62684) P. sutherlandi (62685)
Sakmarian	293.52 - 290.1	Bolivia (La Paz)	Stylastraea branisai (75751)
Sakmarian	293.52 - 290.1	USA (Nevada)	P. exiguus (107965 108036)
Artinskian	290.1 - 283.3	USA (California)	P. occidentalis (120709 120710 120711)
Artinskian	290.1 - 283.3	China (Guangxi)	P. guiensis, P. yishanensis, P. kennedyi (132985)
Artinskian	290.1 - 283.3	USA (Nevada)	Lithostrotion mokomokensis (107561 107577 107579) P. occidentalis (108016)
Artinskian	290.1 - 283.3	Bolivia	Stylastraea branisai (95355)
Kungurian	283.3 - 274.4	USA (Oregon)	Lithostrotion occidentalis (41247 113051)