PBDB Taxon

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

Composita parasulcata

Rhynchonellata - Athyridida - Athyrididae

Taxonomy

Composita parasulcata was named by Cooper and Grant (1976). Its type specimen is USNM 154543e, a shell (Articulated shell), and it is not a trace fossil.

Sister species lacking formal opinion data

C. ambigua, C. ambigua, C. bellula, C. caimaensis, C. ficoidea, C. gibbosa, C. humilis, C. immatura, C. lateralis, C. megala, C. oblonga, C. ptygmation, C. salve, C. struniensis, C. trilobata

Synonymy list

Year	Name and author
1976	Composita parasulcata Cooper and Grant p. 2158 figs. Pl 659, figs 1-69
1977	Composita parasulcata Wardlaw figs. Pl 13, figs 24-31
2019	Composita parasulcata Torres-Martínez et al. p. 50 figs. 4.12, 4.13

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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	Spirigerellinae
genus	Composita	Brown 1849
species	parasulcata

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.

†Composita parasulcata Cooper and Grant 1976

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	56	5.39	1.60	14.8	6.55	3.32

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 Roadian to the top of the Capitanian or 272.30000 to 259.51000 Ma

Collections (37 total)

Time interval	Ma	Country or state	Original ID and collection number
Roadian	272.3 - 268.8	USA (Texas)	Composita parasulcata (43548 43551 43553 81650 81693 81722 101767 102602 102605 105592 105726 105850 105887 105932 106021 106123)
Wordian	266.9 - 264.28	USA (Texas)	Composita parasulcata (43550 43552 81636 81695 81709 105764 105821 105977 106105 106157 106290 106291)
Capitanian	264.28 - 259.51	Mexico (Coahuila)	Composita parasulcata (200253 200254)
Capitanian	264.28 - 259.51	USA (Utah)	Composita parasulcata (39549)
Wuchiapingian	259.9 - 254.17	USA (Nevada)	Composita parasulcata (39517 39518 39519 39749 39754)
Wuchiapingian	259.9 - 254.17	USA (Utah)	Composita parasulcata (39553)