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Hexacrinitacea
Taxonomy
Hexacrinitacea was named by Wachsmuth and Springer (1885). Its type is Hexacrinidae.
It was corrected as Hexacrinitoidea by Webster et al. (1999), Webster (2012), Webster and Webster (2012).
It was assigned to Monobathrida by Webster et al. (1999); and to Compsocrinina by Ubaghs et al. (1978), Webster and Lane (1987), Webster (2012), Webster and Webster (2012).
It was corrected as Hexacrinitoidea by Webster et al. (1999), Webster (2012), Webster and Webster (2012).
It was assigned to Monobathrida by Webster et al. (1999); and to Compsocrinina by Ubaghs et al. (1978), Webster and Lane (1987), Webster (2012), Webster and Webster (2012).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1885 | Hexacrinitacea Wachsmuth and Springer |
| 1978 | Hexacrinitacea Ubaghs et al. p. T473 |
| 1987 | Hexacrinitacea Webster and Lane p. 9 |
| 1999 | Hexacrinitoidea Webster et al. p. 465 |
| 2012 | Hexacrinitoidea Webster p. 66 |
| 2012 | Hexacrinitoidea Webster and Webster |
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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.
Superfm. †Hexacrinitacea Wachsmuth and Springer 1885
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Fm. †Hexacrinitidae Wachsmuth and Springer 1885
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G. †Platyhexacrinus Schmidt 1913
G. †Prohexacrinus Yakovlev 1946
G. †Wacrinus Jell and Jell 1999
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†Wacrinus caseyensis Jell and Jell 1999
†Wacrinus millardensis Jell and Jell 1999
Fm. †Parahexacrinidae Shevchenko 1967
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G. †Agathocrinus Stoddart 1876
G. †Amonohexacrinus Schevchenko 1967
G. †Parahexacrinus Shevchenko 1967
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan 1992, Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: base of the Ludfordian to the top of the Moscovian or 425.00000 to 307.00000 Ma
Collections (65 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Silurian | USA (Oklahoma) | Hexacrinites sp. (528) | |
| Ludlow | USA (Oklahoma) | Hexacrinites carinatus, Hexacrinites adaensis (26823) | |
| Ludfordian - Pridoli | USA (Oklahoma) | Hexacrinites carinatus (26824) | |
| Pridoli | USA (Tennessee) | Hexacrinites sp. (26772) | |
| Lochkovian | Australia (Victoria) | Hexacrinites chirnsidensis (39128) Oehlerticrinus lemenni, Oehlerticrinus jeani (39121 39125) | |
| Lochkovian | Czechia | Hexacrinites ariel (94441 94444) Hexacrinites ariel, Oehlerticrinus sp. (94439) | |
| Lochkovian | Vietnam | Hexacrinites humilicarinatus (83324) | |
| Devonian | USA (New York) | Arthracantha ithacensis (123539) | |
| Pragian | Czechia | Hexacrinites antares (14134) Hexacrinites rigel (14136) | |
| Pragian | Vietnam | Hexacrinites biconcavus, Hexacrinites torulosus, Hexacrinites humilicarinatus, Hexacrinites trangxaensis (83248) Hexacrinites humilicarinatus, Hexacrinites tuberosus (83326) | |
| Pragian | France (Bretagne) | Oehlerticrinus sculptus (81603) | |
| Siegen | Australia (Victoria) | Hexacrinites sp. (56699) | |
| Pragian - Emsian | Tajikistan | Hexacrinites karzevae (45830) Hexacrinites sp. (45831) | |
| Pragian - Emsian | United Kingdom | Oehlerticrinus peachi (191370) | |
| Early/Lower Emsian | Germany (Gemuenden) | Arthroacantha claviger (26903) | |
| Early/Lower Emsian | Tajikistan | Hexacrinites argutus (45841) | |
| Early/Lower Emsian | Czechia | Arthroacantha vega, Hexacrinites antares, Hexacrinites ariel, Hexacrinites rigel (14137) | |
| Emsian | Germany (North Rhine-Westphalia) | Arthroacantha ithacensis (235091) | |
| Emsian | New Zealand | Hexacrinites sp. (40527) | |
| Emsian | South Africa | Arthroacantha sp. (35578) | |
| Emsian | France (Alsace) | Hexacrinites tenicrenulatus, Hexacrinites maximus (40505) | |
| Emsian - Givetian | Australia (Queensland) | Hexacrinites interscapularis, Hexacrinites spinosus (40023) | |
| Late/Upper Emsian | Tajikistan | Hexacrinites sp. (45825 45838 45842) | |
| Eifelian | Vietnam | Hexacrinites humilicarinatus (83321) | |
| Eifelian | Australia (Queensland) | Hexacrinites interscapularis (40022) | |
| Eifelian | Mongolia | Hexacrinites cauliculatus, Hexacrinites karzevae (79716) | |
| Eifelian - Givetian | Canada (Ontario) | Arthroacantha carpenteri (75583) | |
| Middle Devonian | Canada (Ontario) | Arthroacantha carpenteri (193694) | |
| Middle Devonian | USA (New York) | Arthroacantha carpenteri (91091 91216) | |
| Late/Upper Eifelian | Germany | Hexacrinites sp. (60140) | |
| Early/Lower Givetian | Germany (Rhineland-Palatinate) | Hexacrinites nodifer (235975) | |
| Early/Lower Givetian | Germany | Megaradialocrinus elongatus, Megaradialocrinus crispus (144265) | |
| Givetian | USA (Maryland) | Arthroacantha punctobrachiata (10453) | |
| Givetian | Germany | Hexacrinites pateraeformis, Megaradialocrinus brevis, Megaradialocrinus globohirsutus (144266) Hexacrinites pateraeformis, Megaradialocrinus brevis, Megaradialocrinus hieroglyphicus (144264) Hexacrinites pateraeformis, Megaradialocrinus crispus (144259) | |
| Givetian | USA (Ohio) | Arthroacantha carpenteri (38457 38458 38459 38460 38462 38463 38464) | |
| Givetian | USA (Michigan) | Arthroacantha carpenteri (38475) | |
| Givetian | USA (Indiana) | Arthroacantha carpenteri (66002) | |
| Late/Upper Givetian | Russian Federation (Orenburgskaya Oblast) | Hexacrinites kartzevae, Hexacrinites humilicarinatus (83914) | |
| Late/Upper Frasnian | Germany (Rhineland-Palatinate) | Megaradialocrinus sp. (236362) | |
| Late/Upper Frasnian | Australia (Western Australia) | Hexacrinites brownlawi (38996) | |
| Famennian | Tajikistan | Hexacrinites sp. (184358) | |
| Famennian | China (Xinjiang) | Agathocrinus junggarensis, Hexacrinites pinnulata (123199) Agathocrinus junggarensis, Hexacrinites sp. (3564) | |
| Middle Famennian | Australia (Western Australia) | Wacrinus caseyensis, Wacrinus millardensis (38990) | |
| Kinderhookian | USA (Illinois) | Hexacrinites mississippiensis (5749) | |
| Tournaisian | Libya | Platyhexacrinus sp. (36829) | |
| Moscovian | China | Hexacrinitidae indet. (90770) |