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Alphaneospirifer anshunensis

Rhynchonellata - Spiriferida - Choristitidae

Taxonomy
Semibrachythyrina anshunensis was named by Liao (1980). Its type specimen is NIGP 43719 and is a 3D body fossil. Its type locality is Jiaozishan Section Bed 25 (AJ-43), Anshun County, which is in a Changhsingian carbonate limestone/shale in China.

It was recombined as Alphaneospirifer anshunensis by Clapham (2015).

Synonyms
Synonymy list
YearName and author
1980Semibrachythyrina anshunensis Liao p. 264 figs. Pl 7, figs 29-34
1982Semibrachythyrina pyramidiformis Liang p. 244 figs. Pl 101, figs 6-12
1983Semibrachythyrina anshunensis Waterhouse p. 135 figs. Pl 6, figs 1-5
1986Semibrachythyrina anshunensis Li et al. figs. Pl 6, fig 13
1986Semibrachythyrina anshunensis Liao and Meng figs. Pl 3, figs 1,2
1990Semibrachythyrina pyramidiformis Liang p. 329 figs. Pl 60, figs 1-18,24-31; pl 61, figs 1-10; text-figs 41-43
1994Semibrachythyrina anshunensis Shen and He figs. Pl 2, figs 16-24
1995Semibrachythyrina anshunensis Zeng et al. figs. Pl 20, figs 12,14,15
2015Alphaneospirifer anshunensis Clapham

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderSpiriferida
suborderSpiriferidina
superfamilySpiriferoidea()
familyChoristitidaeWaterhouse 1968
subfamilyTangshanellinaeCarter 1994
genusAlphaneospiriferGatinaud 1949
speciesanshunensis()

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.

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Invalid names: Semibrachythyrina pyramidiformis Liang 1982 [synonym]
Diagnosis
ReferenceDiagnosis
J. B. Waterhouse 1983Small shells with high ventral umbo and fine costae in poorly formed bundles.
Measurements
partNmeanminimummaximummedians.d.
shell height1116.410.821.818.43.91

Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 14:12:52
Modified: 2004-02-28 16:12:52
Source: o = order, c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Sakmarian to the top of the Changhsingian or 293.52000 to 252.17000 Ma

Collections (15 total)


Time interval Ma Country or state Original ID and collection number
Sakmarian293.52 - 290.1China (Guangxi) Semibrachythyrina anshunensis (134321)
Capitanian264.28 - 259.51China (Zhejiang) Semibrachythyrina pyramidiformis (95519 111932 111933)
Changhsingian254.17 - 252.17China (Sichuan) Semibrachythyrina anshunensis (156815)
Changhsingian254.17 - 252.17China (Chongqing) Semibrachythyrina anshunensis (156863)
Changhsingian254.17 - 252.17Thailand Semibrachythyrina anshunensis (8145 42776 42777)
Changhsingian254.17 - 252.17China (Hunan) Semibrachythyrina anshunensis (105918 111899)
Changhsingian254.17 - 252.17China (Guizhou) Semibrachythyrina anshunensis (type locality: 51424 111992 117480 117481)