PBDB Taxon

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

Cyclothyris americana

Rhynchonellata - Rhynchonellida - Cyclothyrididae

Taxonomy

Cyclothyris americana was named by Cooper (1955). Its type specimen is USNM No. 124193a, a shell, and it is a 3D body fossil. Its type locality is Small hill opposite Glance Canyon mouth, 0.2 miles off US-80, which is in an Albian reef, buildup or bioherm rudstone in Arizona.

Sister species lacking formal opinion data

C. alta, C. antidichotoma, C. carolinensis, C. deluci, C. irregularis, C. lata, C. lepida, C. parvirostris, C. paucicostata, C. sayni, C. spectabilis, C. tuarkyrica, C. variabilis, C. zahalkai

Synonymy list

Year	Name and author
1955	Cyclothyris americana Cooper pp. 3-4 figs. Pl. 1, Fig. 1-17
1964	Cyclothyris americana Ager p. 109 figs. Pl. 30, Fig. 4(a-b), 5(a-c)

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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	Rhynchonellida	Kuhn 1949
superfamily	Hemithiridoidea	Rzhonsnitskaya 1956
family	Cyclothyrididae	()
subfamily	Cyclothyridinae	(Makridin 1955)
genus	Cyclothyris	M'Coy 1844
species	americana

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.

†Cyclothyris americana Cooper 1955

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	2	9.00	9.00	9.00	9.00	-

Composition:

low Mg calcitep

Environment:

marineuc

Locomotion:

stationaryo

Attached:

yesp

Life habit:

epifaunalo

Diet:

suspension feedero

Vision:

blindc

Created:

2004-02-28 14:12:25

Modified:

2004-02-28 16:12:25

Source: o = order, c = class, p = phylum, uc = unranked clade

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

Age range: base of the Early/Lower Albian to the top of the Middle Albian or 113.20000 to 106.30000 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Albian	113.2 - 110.1	USA (Texas)	Cyclothyris americana (152497)
Middle Albian	110.1 - 106.3	USA (Arizona)	Cyclothyris americana (type locality: 153324)