PBDB Taxon

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

Composita enormis

Rhynchonellata - Athyridida - Athyrididae

Taxonomy

Composita enormis was named by Cooper and Grant (1976). Its type specimen is USNM 153020d, a shell (Articulated shell), and it is not a trace fossil.

Sister species lacking formal opinion data

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 enormis Cooper and Grant p. 2153 figs. Pl 656, figs 21-51
2019	Composita enormis Torres-Martínez et al. p. 617 figs. 5a-i

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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	enormis

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 enormis Cooper and Grant 1976

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	43	7.28	1.60	26.0	7.90	5.66

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 Wordian or 272.30000 to 264.28000 Ma

Collections (29 total)

Time interval	Ma	Country or state	Original ID and collection number
Roadian	272.3 - 268.8	Mexico (Chiapas)	Composita enormis (198600)
Roadian	272.3 - 268.8	Mexico (Coahuila)	Composita emarginata (63057)
Roadian	272.3 - 268.8	USA (Texas)	Composita enormis (43465 43548 43551 43553 43554 81645 101767 101783 102602 102614 102621 105592 105726 105741 105887 105933 106109)
Wordian	266.9 - 264.28	USA (Texas)	Composita enormis (43526 43550 43552 105683 105764 105821 105934 105977 106105 106157)