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Anthracocrinidae
Taxonomy
Anthracocrinidae was named by Strimple and Watkins (1955).
It was assigned to Rhodocrinitacea by Haugh (1979) and Ausich (1998); to Diplobathrida by Cole et al. (2017) and Cole et al. (2017); and to Rhodocrinitoidea by Cole et al. (2018).
It was assigned to Rhodocrinitacea by Haugh (1979) and Ausich (1998); to Diplobathrida by Cole et al. (2017) and Cole et al. (2017); and to Rhodocrinitoidea by Cole et al. (2018).
Synonymy list
| Year | Name and author |
|---|---|
| 1955 | Anthracocrinidae Strimple and Watkins |
| 1979 | Anthracocrinidae Haugh p. 6 |
| 1998 | Anthracocrinidae Ausich p. 23 |
| 2017 | Anthracocrinidae Cole et al. p. 720 |
| 2017 | Anthracocrinidae Cole et al. p. 720 |
| 2018 | Anthracocrinidae Cole et al. p. 494 |
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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.
Fm. †Anthracocrinidae Strimple and Watkins 1955
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G. †Anthracocrinus Strimple and Watkins 1955
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†Anthracocrinus primitivus Strimple and Watkins 1955
G. †Gustabilicrinus Guensburg 1984
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. R. Cole et al. 2017 | Dicyclic camerate with basal concavity involving infrabasals and partial basals; median ray ridges faint to prominent; fixed brachials bifurcating twice within the calyx; regular interray plating 1–2 or 1–3, either with the first interray plate enlarged or plating forming a weak to prominent biseries; posterior interray differentiated or undifferentiated; fixed secundibrachials and tertibrachials; free arm openings 15 or 20; lower pinnules enlarged, typically fixed. |