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Cyclospira perplexa

Rhynchonellata - Atrypida - Cyclospiridae

Taxonomy
Protozyga perplexa was named by Williams (1962). It is a 3D body fossil.

It was recombined as Cyclospira perplexa by Candela and Harper (2014).

Sister species lacking formal opinion data
C. vokesi

Synonymy list
YearName and author
1962Protozyga perplexa Williams p. 246 figs. PI. XXV, figs. 54, 55, 61, 62
2014Cyclospira perplexa Candela and Harper pp. Supplement 1

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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
orderAtrypidaRzhonsnitskaya 1960
suborderLissatrypidinaCopper 1996
superfamilyProtozygoideaCopper 1986
familyCyclospiridaeSchuchert 1913
genusCyclospiraHall and Clarke 1893
speciesperplexa()

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.

†Cyclospira perplexa Williams 1962
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Diagnosis
ReferenceDiagnosis
A. Williams 1962Unequally biconvex, subcircular and sulcate Protozyga with a brachial valve almost as long as wide and about one-eighth as deep as long, bearing a prominent median sulcus, originating near the umbo and curving anteriorly towards a slightly carinate pedicle valve about two-fifths as deep as long; ventral interior with long, subparallel dental lamellae; dorsal median septum not ankylosed with hingeplate but strongly developed and almost two-thirds as long as the brachial valve.
Measurements
No measurements are available
Composition: low Mg calcitep
Entire body: yesg
Adult length: 1.0 to < 10g
Adult width: 1.0 to < 10g
Adult height: 1.0 to < 10g
Folds: minorg
Ribbing: noneg
Spines: noneg
Internal reinforcement: noneg
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2009-06-03 12:17:57
Modified: 2009-06-03 14:17:57
Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade
References: Hendy 2009, Nesnidal et al. 2013, Aberhan et al. 2004

Age range: base of the Cheneyan to the top of the Cautleyan or 452.50000 to 448.80000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Cheneyan452.5 - 451.3United Kingdom (Scotland) Protozyga perplexa (164412)
Richmondian449.6 - 445.5United Kingdom (Northern Ireland) Protozyga perplexa (89260)
Cautleyan449.2 - 448.8United Kingdom Protozyga perplexa (163262 163263)
Cautleyan - Rawtheyan449.2 - 445.2United Kingdom (Wales) Protozyga perplexa (8291)