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Phalium (Menthafontia)

Gastropoda - Cassidae

Taxonomy
Phalium (Menthafontia) was named by MacNeil and Dockery (1984) [Sepkoski's age data: T Ol-l Sepkoski's reference number: 852]. Its type is Phalium (Menthafontia) menthafons.

It was assigned to Phalium by MacNeil and Dockery (1984); and to Neotaenioglossa by Sepkoski (2002).

Synonymy list
YearName and author
1984Phalium (Menthafontia) MacNeil and Dockery p. 111
2002Menthafonia Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classGastropodaCuvier 1797
RankNameAuthor
superorderHypsogastropoda(Ponder and Lindberg 1997)
infraorderLittorinimorphaGolikov and Starobogtov 1975
superfamilyTonnoidea(Suter 1913)
familyCassidaeLatreille 1825
subfamilyPhaliinaeBeu 1981
genusPhaliumLink 1807
subgenusMenthafontia

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
F. S. MacNeil and D. T. Dockery 1984Juveniles of both the type from the Mint Spring Formation and its Byram analog, Cassis mississippiensis Conrad, have a spiral sculpture all over the whorls in which the posterior edge of each spiral band is raised and the anterior edge is depressed. Adults, however, are nearly smooth. The shoulder has prominent thick nodes and there is usually a much weaker staggered set of nodes below the shoulder. At least from the standpoint of the spiral sculpture, juveniles and adults appear quite different (compare figs. 7 and 8, pi. 30).