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Forcipulatacea
Taxonomy
Forcipulatacea was named by Blake (1987). It is extant. It was considered monophyletic by Blake and Hagdorn (2003).
It was assigned to Asteroidea by Blake (1989); to Neoasteroidea by Villier et al. (2009); and to Neoasteroidea by Blake and Hagdorn (2003) and Blake et al. (2017).
It was assigned to Asteroidea by Blake (1989); to Neoasteroidea by Villier et al. (2009); and to Neoasteroidea by Blake and Hagdorn (2003) and Blake et al. (2017).
Subtaxa
Synonymy list
Year | Name and author |
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1987 | Forcipulatacea Blake |
1989 | Forcipulatacea Blake p. 213 |
2003 | Forcipulatacea Blake and Hagdorn p. 35 |
2009 | Forcipulatacea Villier et al. p. 390 |
2017 | Forcipulatacea Blake et al. p. 324 |
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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.
Superor. Forcipulatacea Blake 1987
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Or. †Trichasteropsida Blake 1987
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Fm. †Trichasteropsiidae Blake and Hagdorn 2003
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G. †Trichasteropsis Eck 1879
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†Trichasteropsis bielertorum Blake and Hagdorn 2003
†Trichasteropsis senfti Eck 1879
†Trichasteropsis weissmanni von Münster 1843
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Invalid names: Asterias cilicia Quenstedt 1852 [synonym], Asterias obtusa Goldfuss 1833 [synonym], Trichasteropsis hippeleini Rothe 1959 [synonym]
Or. Zorocallida Downey 1970
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Fm. †Terminasteridae Gale 2011
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G. †Alkaidia Blake and Reid 1998
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†Alkaidia megaungula Ewin and Gale 2020
†Alkaidia sumralli Blake and Reid 1998
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: c = class, p = phylum | |||||
References: Aberhan 1992, Aberhan et al. 2004 |
Age range
Maximum range based only on fossils: base of the Anisian to the top of the Early/Lower Cenomanian or 247.20000 to 93.50000 Ma
Minimum age of oldest fossil (stem group age): 242.0 Ma
Minimum age of oldest fossil (stem group age): 242.0 Ma
Collections (35 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Anisian | Germany | Trichasteropsis senfti (31996 59960) Trichasteropsis weissmanni (59964) | |
Pelsonian | Germany (Nordrhein-Westfalen) | Trichasteropsis bielertorum (59967) | |
Pelsonian | Germany (Niedersachsen) | Trichasteropsis bielertorum (66896) | |
Ladinian | Germany (Bayern) | Berckhemeraster charistikos (59969 59970) Trichasteropsis weissmanni (59965 59966) | |
Ladinian | Germany (Thuringia) | Trichasteropsis senfti (59962) Trichasteropsis weissmanni (59963) | |
Ladinian | Germany | Trichasteropsis senfti (59958 59959) Trichasteropsis weissmanni (59926 59928) Trichasteropsis weissmanni, Trichasteropsis senfti (59927 59961) | |
Ladinian | Germany (Baden-Württemberg) | Berckhemeraster charistikos (59968) | |
Fassanian | Italy | Trichasteropsis sp. (236942) | |
Fassanian | Germany | Trichasteropsis weissmanni (187348) | |
Liasicus | Belgium (Luxembourg) | Terminaster sp. (40087) | |
Sinemurian | Luxembourg | Terminaster spinulosus, Terminaster sp. (32014) | |
Davoei | United Kingdom (England) | Asterias gaveyi (33336) | |
Callovian | Germany (Brandenburg) | Terminaster cancriformis (32016) | |
Early/Lower Callovian | France | Terminaster cancriformis (58221) | |
Late/Upper Oxfordian | Switzerland | Terminaster cancriformis (58317) | |
Late/Upper Oxfordian | France | Terminaster cancriformis (61724) | |
Late/Upper Hauterivian | Switzerland (Neuchatel) | Protothyraster priscus (31986) | |
Late/Upper Albian | USA (Texas) | Alkaidia sumralli (59875 59876 59878 59880) | |
Early/Lower Cenomanian | USA (Texas) | Alkaidia sumralli (59881 59882 59883) |