Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Mourlonopsis

Gastropoda - Pleurotomariida - Pleurotomariidae

Taxonomy
Mourlonopsis was named by Fletcher (1958) [Sepkoski's age data: P Leon P Guad Sepkoski's reference number: 745,797].

It was assigned to Pleurotomariidae by Fletcher (1958); and to Neotaenioglossa by Sepkoski (2002).

Synonymy list
YearName and author
1958Mourlonopsis Fletcher p. 129
2002Mourlonopsis Sepkoski, Jr.

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassOrthogastropoda
superorderVetigastropodaSalvini-Plawen 1980
orderPleurotomariida()
superfamilyPleurotomarioidea(Swainson 1840)
familyPleurotomariidaeSwainson 1840
genusMourlonopsis

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
H.O. Fletcher 1958Medium sized turbinate pleurotomarids with a moderately high spire, five to six distinct, rounded whorls, slightly shouldered close to the upper suture; a narrow selenizone bordered by carinae, situated above the whorl periphery; sutures sharply angular and deep; base rounded, phaneromphalous; outer lip with a wide insinuation, culminating in a short slit; aperture elongate-oval, its vertical plane sloping inwards at about 35°; columella lip thick, somewhat flattened, arcuate and to some extent reflexed; ornamentation consists of striae following the line of growth and possible fine spiral lirae. Shell thin.