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Virgiana decussata

Rhynchonellata - Pentamerida - Virgianidae

Taxonomy
Pentamerus decussatus was named by Whiteaves (1891) [4 syntypes]. Its type specimen is GSC 8997 and is a 3D body fossil.

It was recombined as Conchidium decussatum by Hall and Clarke (1892); it was recombined as Virgiana decussata by Savage (1918), Jin and Copper (2000) and Jin et al. (2006).

Synonymy list
YearName and author
1891Pentamerus decussatus Whiteaves p. 295 figs. Pl. 3, figs. 3, 4
1892Conchidium decussatum Hall and Clarke p. 235 figs. Pl. 65, figs. 1, 2, Pl. 66, fig. 15.
1918Virgiana decussata Savage pp. 334-336
2000Virgiana decussata Jin and Copper pp. 24 - 26 figs. Plate 1, figures 1-9; Plate 2, figures 1-9; Plate 3, figures 1-9; Figure 10
2006Virgiana decussata Jin et al.

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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
orderPentameridaSchuchert and Cooper 1931
suborderPentameridinaSchuchert and Cooper 1931
superfamilyPentameroideaMcCoy 1844
familyVirgianidaeBoucot and Amsden 1963
subfamilyVirgianinaeBoucot and Amsden 1963
genusVirgianaTwenhofel 1914
speciesdecussata(Whiteaves 1891)

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.

†Virgiana decussata Whiteaves 1891
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Diagnosis
ReferenceDiagnosis
J. Jin and P. Copper 2000Shell large, elongate, strongly biconvex, with pedicle valve about twice as deep as brachial valve. Hingeline short, curved. Anterior commissure gently sulcate.
Measurements
No measurements are available
Composition: low Mg calcitep
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Adult height: 10 to < 100g
Folds: noneg
Ribbing: minorg
Spines: noneg
Internal reinforcement: noneg
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2009-06-04 12:37:11
Modified: 2009-06-04 14:37:11
Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013, Hendy 2009

Age range: base of the Telychian to the top of the Llandovery or 438.50000 to 433.40000 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Silurian443.8 - 419.2Canada (Manitoba) Virgiana decussata (26420)
Llandovery443.4 - 433.4Canada (Manitoba) Virgiana decussata (2979 2980 2981 2990 2993 3000 3001 3002 3003 3022 3023 3024 3026 3032)
Telychian - Wenlock438.5 - 427.4Canada (Manitoba) Virgiana decussata (26365 26366 26367 26368 26419 26422 26425)