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Cyrtothyris

Rhynchonellata - Terebratulida - Sellithyrididae

Taxonomy
Cyrtothyris was named by Middlemiss (1959) [Sepkoski's age data: K Vala-u K Albi-m Sepkoski's reference number: 776]. Its type is Terebratula depressa cyrta.

It was assigned to Terebratulida by Sepkoski (2002); and to Rectithyridinae by Cooper (1993), Williams et al. (2006).

Synonymy list
YearName and author
1959Cyrtothyris Middlemiss p. 123
1993Cyrtothyris Cooper p. 5
2002Cyrtothyris Sepkoski
2006Cyrtothyris Williams et al. p. 2066

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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
orderTerebratulida
suborderTerebratulidina
superfamilyTerebratuloidea(Gray 1840)
familySellithyrididaeMuir - Wood 1965
subfamilyRectithyridinaeMuir-Wood 1965
genusCyrtothyris

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.

G. †Cyrtothyris Middlemiss 1959
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†Cyrtothyris cyrta Walker 1868
†Cyrtothyris dallasi Walker 1867
†Cyrtothyris maynci Owen 1976
†Cyrtothyris middlemissi Calzada 1972
†Cyrtothyris seeleyi Walker 1870
†Cyrtothyris undisona Cooper 1993
†Cyrtothyris uniplicata Walker 1870
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
height733.718.553.443.414.5
shell height623.016.028.025.04.43

Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryf
Attached: yesf
Life habit: low-level epifaunalf
Diet: suspension feederf
Vision: blindc
Created: 2018-11-10 17:41:09
Modified: 2018-11-10 17:41:09
Source: f = family, c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Tithonian to the top of the Early/Lower Campanian or 149.20000 to 72.20000 Ma

Collections (38 total)


Time interval Ma Country or state Original ID and collection number
Tithonian149.2 - 143.1Svalbard and Jan Mayen C. sp. (163966 163969)
Berriasian143.1 - 137.05Svalbard and Jan Mayen C. cyrta (163970)
Valanginian137.05 - 132.6Greenland C. maynci (62642)
Late/Upper Hauterivian132.6 - 125.77Ukraine (Crimea) C. dagysi (57033 57034 57036)
Early/Lower Aptian121.4 - 119.57Kazakhstan C. cantabridgiensis, C. seeleyi (64638)
Aptian121.4 - 113.2Switzerland C. cyrta (165352)
Aptian121.4 - 113.2Morocco C. middlemissi (66586 66587 66588)
Aptian121.4 - 113.2United Kingdom (England) C. cantabridgiensis, C. seeleyi (1841) C. cyria, C. uniplicata (1778) C. cyrta, C. uniplicata, C. cantabridgiensis (1854) C. cyrta, C. uniplicata, C. cantabridgiensis, C. seeleyi, C. dallasi (1857) C. sp. (1859) C. uniplicata (1769) C. uniplicata, C. cantabridgiensis (1838)
Aptian121.4 - 113.2United Kingdom C. cantabridgiensis (165354 165355) C. cyrta (165348 165349) C. cyrta, C. cantabridgiensis, C. dallasi (65789) C. cyrta, C. seeleyi (65783 165351) C. cyrta, C. uniplicata (65785) C. cyrta, C. uniplicata, C. cantabridgiensis, C. seeleyi, C. dallasi (65775 65779) C. dallasi (65787 165356) C. uniplicata (165340)
Aptian121.4 - 113.2Germany C. cyrta (165353)
Albian113.2 - 100.5United Kingdom C. cyrta (165350)
Late/Upper Albian106.3 - 100.5France C. middlemissi (58885)
Late/Upper Albian106.3 - 100.5Spain C. middlemissi (3823)
Late/Upper Albian106.3 - 100.5South Africa C. ndumuensis (66074)
Early/Lower Campanian83.6 - 72.2South Africa C. undisona (190517)