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Plekonella acuta

Rhynchonellata - Rhynchonellida - Wellerellidae

Taxonomy
Plekonella acuta was named by Campbell (1953). Its type specimen is UQ F14229, a shell (Conjoined shell), and it is a 3D body fossil. Its type locality is UQ L999, Dry Creek, Ingelara, which is in a Wuchiapingian coastal mudstone in the Peawaddy Formation of Australia.

Synonymy list
YearName and author
1953Plekonella acuta Campbell p. 18 figs. Pl 3, figs 17-26
1964Plekonella acuta Waterhouse p. 86 figs. Pl 16, figs 13-16; pl 17, figs 1-8; text-fig 32c,33,34a,b,36-40
1967Plekonella acuta Waterhouse p. 84 fig. 10,14
1976Plekonella acuta Waterhouse p. 239 fig. 4.15,4.16
1986Plekonella acuta Waterhouse p. 64 figs. Pl 14, fig 26
1987Plekonella acuta Clarke p. 266 fig. 4A,B
1988Plekonella acuta Parfrey p. 14 figs. Pl 3, figs 12,13

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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
orderRhynchonellidaKuhn 1949
superfamilyWellerelloideaLicharew 1956
familyWellerellidaeLicharew 1956
subfamilyWellerellinaeLicharew 1956
genusPlekonella
speciesacuta

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.

†Plekonella acuta Campbell 1953
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Diagnosis
ReferenceDiagnosis
J. B. Waterhouse 1967Fan-shaped shells with two costae in the sulcus and three costae on the fold, dorsal septum large
Measurements
partNmeanminimummaximummedians.d.
shell height163.912.0011.03.402.60

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 Kungurian to the top of the Changhsingian or 279.30000 to 252.17000 Ma

Collections (20 total)


Time interval Ma Country or state Original ID and collection number
Kungurian279.3 - 272.3New Zealand Plekonella acuta (52772)
Kungurian279.3 - 272.3New Zealand (Southland) Plekonella acuta (41776)
Roadian272.3 - 268.8New Zealand (Southland) Plekonella acuta (41781)
Wordian266.9 - 264.28New Zealand Plekonella acuta (52773)
Capitanian264.28 - 259.51New Zealand (Southland) Plekonella acuta (41777)
Wuchiapingian259.9 - 254.17New Zealand (Southland) Plekonella acuta (39923 39925)
Wuchiapingian259.9 - 254.17Australia (Queensland) Plekonella acuta (type locality: 97269 103145 105009 120346 120350 120539 123235)
Wuchiapingian259.9 - 254.17Australia (Tasmania) Plekonella acuta (51314)
Changhsingian254.17 - 252.17New Zealand Plekonella acuta (52751 52753 52759 52767 52780)