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Sphriganaria subcircularis

Rhynchonellata - Terebratulida - Eudesiidae

Taxonomy
Sphriganaria subcircularis was named by Cooper (1989). It is not extant. Its type locality is KK7, Al Bakhra, Dorsetensia Zone, which is in a Bajocian shallow subtidal limestone in the Dhruma Formation of Saudi Arabia.

It was synonymized subjectively with Eudesia (Sphriganaria) magharensis by Alméras et al. (2010).

Synonymy list
YearName and author
1989Sphriganaria subcircularis Cooper
2023Sphriganaria subcircularis Feldman et al. p. 1840 figs. 8e-h

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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
suborderTerebratellidinaMuir-Wood 1955
superfamilyZeillerioideaAllan 1940
familyEudesiidaeMuir-Wood 1965
genusSphriganaria
speciessubcircularis

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.

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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height214.512.417.014.73.25

Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryf
Attached: yesf
Life habit: low-level epifaunalf
Diet: suspension feederf
Vision: blindc
Created: 2018-11-10 17:27:57
Modified: 2018-11-10 17:27:57
Source: f = family, c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Bajocian to the top of the Callovian or 170.90000 to 161.50000 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Bajocian170.9 - 168.2Saudi Arabia Sphriganaria subcircularis (type locality: 98824)
Bajocian170.9 - 168.2Jordan Eudesia subcircularis (35356 35551 35703)
Bathonian168.2 - 165.3Jordan Eudesia subcircularis (35669 35670 35671 35672 35706 35739)
Bathonian168.2 - 165.3Saudi Arabia Sphriganaria subcircularis (98835)
Callovian165.3 - 161.5Jordan Eudesia subcircularis (35548 35667)
Early/Lower Callovian165.3 - 161.5Jordan Sphriganaria subcircularis (231872)