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Actinocrinites
Taxonomy
Actinocrinites was named by Miller (1821) [Sepkoski's age data: C Tour-u C Mosc Sepkoski's reference number: 704]. It is not extant. It is the type genus of Actinocrinitinae.
It was assigned to Actinocrinidae by Wanner (1924); to Actinocrinitidae by Webster (1987); to Actinocrinitinae by Ubaghs et al. (1978), Webster and Lane (1987) and Lane et al. (2001); and to Monobathrida by Sepkoski (2002).
It was assigned to Actinocrinidae by Wanner (1924); to Actinocrinitidae by Webster (1987); to Actinocrinitinae by Ubaghs et al. (1978), Webster and Lane (1987) and Lane et al. (2001); and to Monobathrida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1821 | Actinocrinites Miller |
| 1924 | Actinocrinus Wanner |
| 1978 | Actinocrinites Ubaghs et al. p. T454 |
| 1987 | Actinocrinites Webster p. 99 |
| 1987 | Actinocrinites Webster and Lane p. 8 |
| 2001 | Actinocrinites Lane et al. |
| 2002 | Actinocrinites Sepkoski |
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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. †Actinocrinites Miller 1821
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†Actinocrinites anchorensis Webster and Lane 1987
†Actinocrinites batheri Whidborne 1896
†Actinocrinites permicus Wanner 1924
†Actinocrinites tesseracontadactylus Goldfuss 1831
†Actinocrinites timoricus Wanner 1924
†Actinocrinites zhaoae Waters et al. 2003
†Actinocrinus copei Miller 1881
†Actinocrinus jugosus Hall 1859
†Actinocrinus tenuidiscus Hall 1861
†Actinocrinus wachsmuthi White 1880
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. D. Webster and N. G. Lane 1987 | Calyx low to moderately high, bowl- to cone-shaped, tegmen convex, bearing subcentral anal tube; basal circlet low, distal tips upflared, visible in lateral view, RR largest plates in theca, primanal in radial circlet followed by 2 plates; IIBr axillary, rarely 2 IIBrr per ray; fixed brachs commonly including IIIBr i to IIIBr 3 ; arms strongly grouped into protruding lobes, some lobes beginning with IIBrr or IIIBrr; free arms 4 or 6 per ray at thecal rim, in some branching distally, uniserial proximally, biserial distally; iIBr number variable, commonly 5 to 7 below ambulacral tracts, in contact with tegmenal plates distally; iIIBrr present or not; tegmenal plates small, undifferentiated; anal opening at distal end of slender anal tube. Stellate ridge and ray ornamentation common on theca, nodes or short blunt spines common on some tegmenal plates. Stem round; lumen pentalobate. |