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Ilsanella

Helcionelloida - Helcionellida - Helcionellidae

Synonyms
Synonymy list
YearName and author
1969Ginella Rozanov et al. pp. 164-165
1976Ginella Runnegar and Jell p. 116
1976Parmophorella Runnegar and Jell p. 117
1981Ilsanella Missarzhevsky p. 123
1989Ilsanella Missarzhevsky p. 171
1992Ilsanella Bengtson p. 1027
1994Ilsanella Wang p. 11
2002Ilsanella Parkhaev p. 34
2002Ilsanella Sepkoski
2002Parmophorella Sepkoski
2016Ilsanella Jacquet and Brock

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classHelcionelloidaPeel 1991
orderHelcionellida
superfamilyHelcionelloidea(Wenz 1938)
familyHelcionellidae
genusIlsanella

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.

G. †Ilsanella Missarzhevsky 1981
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Ilsanella applanata Parkhaev 2001
Ilsanella atdabanica Rozanov and Missarzhevsky 1966
Ilsanella coreanicum Kobayashi 1958
Ilsanella critica Barskova 1987
Ilsanella diversa Barskova 1988
Ilsanella enallaxa Jacquet and Brock 2016
Ilsanella galinae Barskova 1988
Ilsanella historica Barskova 1987
Ilsanella oblonga Cobbold 1921
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Invalid names: Ilsanella comleyensis Cobbold 1921 [synonym]
Ilsanella orectus Jiang 1982
Ilsanella paupera Billings 1872
Ilsanella plana Barskova 1987
Ilsanella reticulata Zhou and Xiao 1984
Ilsanella rozanovi Wang 1994
Ilsanella savitskii Rozanov et al. 1969
Ilsanella simplex Chen and Zhang 1980
Ilsanella yorkensis Parkhaev 2001
Invalid names: Ginella Rozanov et al. 1969 [replaced], Parmophorella [synonym]
Diagnosis
ReferenceDiagnosis
S. M. Jacquet and G. A. Brock 2016Large cyrtoconic univalve, high to tall profile (H:L ratio ≥0.75 to N1), moderately to slowly expanding, elliptical to sub-rectangular apertural outline, with eccentric apex that rarely projects beyond the sub-apical margin. Adult specimens greater than 10 mm in length. Supra-apical surface evenly convex, sub-apical surface concave directly under the apex, but minimal concavity or almost straight adapically to the apertural margin. Apertural plane straight in lateral view. External ornament consists of wide, uniformly rounded concentric
rugae.