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Hemitoma (Montfortia)

Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)Not linked to a GBIF record.
PaleoBioDB ID (PBDB)114746https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=114746
Ranksubgenus (PBDB)
Taxonomy (PBDB)Life : Animalia : Mollusca : Gastropoda : Fissurellidae : Hemitoma : Hemitoma (Montfortia)
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-Bilateria
-EubilateriaAx 1987
-ProtostomiaGrobben 1908
-Spiralia
superphylumLophotrochozoa
phylumMolluscaLinnaeus 1758
classGastropodaCuvier 1797
subclassOrthogastropodaPonder and Lindberg 1997
superorderVetigastropodaSalvini-Plawen 1980
superfamilyFissurelloidea(Fleming 1822)
familyFissurellidaeFleming 1822
genusHemitomaSwainson 1840
subgenusHemitoma (Montfortia)(Recluz 1843)
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Hemitoma (Montfortia)subgenusbelongs to Hemitomastated with evidenceKnight et al., 1960
Hemitoma (Montfortia)subgenusbelongs to Hemitomastated without evidenceSquires, 1987
Hemitoma (Montfortia)subgenusbelongs to Hemitomastated with evidenceTodd, 2001
Hemitoma (Montfortia)genusbelongs to Archaeogastropodasecond handSepkoski, 2002
Status (PBDB)extant
Taxon Size (PBDB)7
Extant Size (PBDB)4 (57%)
First Recorded Appearance56.0 - 47.8 Ma
Eocene
Motilityfacultatively mobile (based on Fissurellidae)
Visionlimited (based on Gastropoda)
Dietgrazer (based on Fissurellidae)
Taphonomyaragonite (based on Gastropoda)
Primary Reference (PBDB)H. S. Ladd. 1966. Chitons and Gastropods (Haliotidae through Adeorbidae) from Western Pacific Islands. United States Geological Survey Professional Paper 531:1-98

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Montfortia (Montfortista)
subgenus
listed (PBDB)12.59 Ma
Pleistocene
0 Ma
Extant
Hemitoma (Montfortia) bikiniensis
species
listed (PBDB)20.01 Ma
Pleistocene
0 Ma
Extant
Hemitoma (Montfortia) cantonensis
species
listed (PBDB)156.0 Ma
Paleocene
56.0 Ma
Paleocene

Synonymy List

YearName and Author
1843Montfortia Recluz p. 259
1960Hemitoma (Montfortia) Knight et al. p. 228
1966Hemitoma (Montfortia) Ladd p. 29
1987Hemitoma (Montfortia) Squires p. 21
2001Hemitoma (Montfortia) Todd
2002Montfortia Sepkoski, Jr.

References

Ladd H. S. (1966) Chitons and Gastropods (Haliotidae through Adeorbidae) from Western Pacific Islands, United States Geological Survey Professional Paper 531, 1-98
Knight J. B., Cox L. R., et al (1960) Systematic descriptions, Treatise on Invertebrate Paleontology. Mollusca I 1, 169-339
Squires R. L. (1987) Eocene molluscan paleontology of the Whitaker Peak area, Los Angeles and Ventura counties, California, Contributions in Science, Natural History Museum of Los Angeles County 388, 1-93
Todd J. A. (2001) Systematic list of gastropods in the Panama Paleontology Project collections
Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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