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Hyolithus (Hyolithus) mutatus

Hyolithida - Hyolithidae

Synonymy list
YearName and author
1932Hyolithus (Hyolithus) mutatus Poulsen p. 23 figs. pl. 3: 12–17
2004Hyolithus (Hyolithus) mutatus Malinky and Skovsted p. 564 fig. 8E

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
RankNameAuthor
phylumHyolitha
orderHyolithidaMathew 1962
familyHyolithidaeNicholson 1889
genusHyolithus
subgenusHyolithus
speciesmutatus

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
J. M. Malinky and C.B. Skovsted 2004Cyrtoconic conch with apical curvature toward dorsum; conch has narrow tapering appearance due to low apical angle; venter seemingly flat, grading into sharp lateral edges; flanks of dorsum inflated and rounded, intersecting to create rounded central ridge; ligula apparently short and rounded on anterior edge with gently dipping sides; cross−section triangular; shell on dorsum and venter with faint, closely spaced transverse lines; internal mould of dorsum with widely and irregularly spaced transverse rugae.