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Mastigospira

Gastropoda - Euomphalina - Euomphalidae

Taxonomy
Mastigospira was named by La Rocque (1949) [Sepkoski's age data: D Eife-u D Give Sepkoski's reference number: 362]. Its type is Hyolithes alatus.

It was assigned to Gastropoda by La Rocque (1949); to Ophiletidae by Morris and Cleevely (1981); to Euomphalidae by Knight et al. (1960) and Linsley and Kier (1984); to Euomphalina by Sepkoski (2002); and to Odontomariinae by Frýda et al. (2006).

Synonymy list
YearName and author
1949Mastigospira La Rocque pp. 114 – 116
1960Mastigospira Knight et al. p. 194
1981Mastigospira Morris and Cleevely
1984Mastigospira Linsley and Kier
2002Mastigospira Sepkoski
2006Mastigospira Frýda et al. p. 230

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassEogastropoda
orderEuomphalina
superfamilyEuomphaloidea()
familyEuomphalidae
subfamilyOdontomariinae
genusMastigospira

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. †Mastigospira La Rocque 1949
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Mastigospira alata Whiteaves 1892
Mastigospira ingens La Rocque 1949
Mastigospira intermedia La Rocque 1949
Mastigospira weberae Blodgett 1992
Diagnosis
ReferenceDiagnosis
A. La Rocque 1949Shell large, 96 mm. or more long, tusk-shaped, uncoiled, gently and irregularly curved, triangular in cross section, with three more or less developed, unequally spaced, winglike processes, two of them basal, the other apical, the latter less pronounced than the former; interior circular in cross section. Shell thick, especially at the bases of the processes. Aperture flaring at the two basal angles, much less so at the apical one. Sculpture of fine growth lines curving backward along the base and forward from the apical angle. Nuclear whorls not preserved. Apical part terminating abruptly in a convex surface which suggests that the earliest part of the shell had been broken off at a point marked by a septum or plug.