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Orthis (Platystrophia) laticosta

Rhynchonellata - Orthida - Platystrophiidae

Synonymy list
YearName and author
1871Orthis laticosta James p. 10
1873Orthis (Platystrophia) laticosta Meek p. 116 figs. pl. 10 f. 4
1909Platystrophia laticosta Foerste pp. 58 - 59 figs. Plate III, figs. I A. B.
1979Platystrophia laticosta Alberstadt pp. B14 - B16 figs. Plate 5, figures 45-49; plate 6, figures 1-13, 19-28; plate 7, figures 17-21
2007Vinlandostrophia laticosta Zuykov and Harper figs. pl. 3. f. 1-2

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
RankNameAuthor
classRhynchonellataWilliams et al. 1996
orderOrthidaSchuchert and Cooper 1932
suborderOrthidinaSchuchert and Cooper 1932
superfamilyPlectorthoideaSchuchert and Le Vene 1929
familyPlatystrophiidaeSchuchert 1929
genusOrthis
subgenusPlatystrophia
specieslaticosta()

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.

Diagnosis
ReferenceDiagnosis
A. F. Foerste 1909Platystrophia laticosta is characterized by the presence of 5 to 7 broad plications on each side of the fold. Both the fold and sinus are less compressed laterally than in Platystrophia cypha, and the lateral plications on the sides of the fold and sinus, though inconspicuous, are less commonly obsolete. The postero-lateral outline usually does not form angles more acute than 70 degrees. The shell is comparatively compressed antero-posteriorly.