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Palaeostrophomena kilbuchoensis

Strophomenata - Strophomenida - Leptellinidae

Orthis kilbuchoensis was named by Davidson (1883) [Orthis vel Strophomena ? Kilbuchoensis].

It was recombined as Palaeostrophomena kilbuchoensis by Williams (1962).

Synonymy list
YearName and author
1883Orthis kilbuchoensis Davidson p. 188 figs. pl. xiii, figs. 1-2
1962Palaeostrophomena kilbuchoensis Williams pp. 157 - 158 figs. P1. XIV, figs. 22-25, 27, 28, 31

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phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyPlectambonitoideaJones 1928
familyLeptellinidaeUlrich and Cooper 1936
subfamilyPalaeostrophomeninaeCocks and Rong 1989
genusPalaeostrophomenaHoltedahl 1916
specieskilbuchoensis(Davidson 1883)

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.

A. Williams 1962Elongately semi-ellipitical, rarely auriculate, biplanate Palaeostrophomena almost threefifths as long as wide, rarely with a dorsal median fold and ornamented by 8-12 costellae per millimetre antero-medianly and low, closely spaced rugae with a wave-length of about 0-25 mm. arranged concentrically to the umbo; ventral vascula media initially parallel or divergent, branching at almost one-half the length of the pedicle valve; notothyrial platform prolonged anteriorly as a pair of subparallel lateral ridges lying in front of the socket ridges as well as a pair of submedian ridges embracing a median septum.