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Rhactorthis crassa

Rhynchonellata - Orthida - Rhactorthidae

Taxonomy
Rhactorthis crassa was named by Williams (1963). It is a 3D body fossil. Its type locality is Gelli-grin Group, Caradoc, Bala District, Merionethshire, which is in a Longvillian offshore mudstone/siltstone in the United Kingdom. It is the type species of Rhactorthis.

Sister species lacking formal opinion data
R. kaagverensis

Synonymy list
YearName and author
1963Rhactorthis crassa Williams

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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
orderOrthidaSchuchert and Cooper 1932
suborderOrthidinaSchuchert and Cooper 1932
superfamilyPlectorthoideaSchuchert and Le Vene 1929
familyRhactorthidaeWilliams 1963
genusRhactorthisWilliams 1963
speciescrassaWilliams 1963

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.

†Rhactorthis crassa Williams 1963
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Diagnosis
No diagnoses are available
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: noneg
Ribbing: minorg
Spines: noneg
Internal reinforcement: noneg
Environment: marineuc
Locomotion: stationaryo
Attached: yeso
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2009-06-04 09:16:07
Modified: 2009-06-04 11:16:07
Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade
References: Nesnidal et al. 2013, Aberhan et al. 2004, Hendy 2009

Age range: Longvillian or 457.20000 to 455.00000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Longvillian457.2 - 455.0United Kingdom (Wales) Rhactorthis crassa (type locality: 43640)
Woolstonian457.2 - 454.0United Kingdom (Wales) Rhactorthis crassa (192390)