PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Cleiothyridina acutomarginalis

Rhynchonellata - Athyridida - Athyrididae

Taxonomy

Athyris acutomarginalis was named by Waagen (1883).

It was recombined as Cleiothyridina acutomarginalis by Cooper and Grant (1976), Lee and Gu (1980).

Sister species lacking formal opinion data

C. angelicoides, C. coloradoensis, C. crassicardinalis, C. deroissii, C. elegans, C. glabristria, C. humerosa, C. incrassata, C. media, C. pecossi, C. segmentata, C. squamosa, C. transversa

Synonymy list

Year	Name and author
1883	Athyris acutomarginalis Waagen p. 482 figs. Pl 38, figs 12,13
1976	Cleiothyridina acutomarginalis Cooper and Grant p. 2138
1980	Cleiothyridina acutomarginalis Lee and Gu p. 401 figs. Pl 174, figs 3,4

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
—	Lophophorata
—	Panbrachiopoda	Carlson and Cohen 2020
phylum	Brachiopoda	Cuvier 1805

Rank	Name	Author
subphylum	Rhynchonelliformea	Williams et al. 1996
class	Rhynchonellata	Williams et al. 1996
order	Athyridida	Boucot et al. 1964
suborder	Athyrididina	Boucot et al. 1964
superfamily	Athyridoidea	McCoy 1844
family	Athyrididae	McCoy 1841
subfamily	Cleiothyridininae
genus	Cleiothyridina	Buckman 1906
species	acutomarginalis	()

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.

†Cleiothyridina acutomarginalis Waagen 1883

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	2	9.50	9.50	9.50	9.50	-

Composition:

low Mg calcitep

Environment:

marineuc

Locomotion:

stationarysubo

Attached:

yesp

Life habit:

low-level epifaunalsubo

Diet:

suspension feedersubo

Vision:

blindc

Created:

2018-11-10 18:06:04

Modified:

2018-11-10 18:06:04

Source: subo = suborder, c = class, p = phylum, uc = unranked clade

References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Wordian to the top of the Capitanian or 266.90000 to 259.51000 Ma

Collections (15 total)

Time interval	Ma	Country or state	Original ID and collection number
Wordian	266.9 - 264.28	Pakistan	Athyris acutomarginalis (81503 125805 125810 125812 125814 125816 125818 125819 125827 125868 125873)
Wordian - Capitanian	266.9 - 259.51	China (Nei Mongol)	Cleiothyridina acutomarginalis (94918 111155)
Wordian - Capitanian	266.9 - 259.51	Pakistan	Athyris acutomarginalis (127031)
Capitanian	264.28 - 259.51	Pakistan	Athyris acutomarginalis (120170)