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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Helicarionoidea
Taxonomy
Helicarionoidea was named by Bourguignat (1877). It is extant.
It was assigned to Gastropoda by Bouchet et al. (2005); and to Limacoidei by Bouchet et al. (2017).
It was assigned to Gastropoda by Bouchet et al. (2005); and to Limacoidei by Bouchet et al. (2017).
Subtaxa
Synonymy list
Year | Name and author |
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1877 | Helicarionoidea Bourguignat |
2005 | Helicarionoidea Bouchet et al. p. 269 |
2017 | Helicarionoidea Bouchet et al. p. 366 |
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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.
Superfm. Helicarionoidea Bourguignat 1877
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Reference: Kiessling 2004 |
Age range
Maximum range based only on fossils: base of the Priabonian to the top of the Holocene or 38.00000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 33.9 Ma
Minimum age of oldest fossil (stem group age): 33.9 Ma
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Priabonian | Oman | Trochozonites arabica (171343) | |
Early/Lower Miocene | Uganda | Trochozonites sp. (21723) | |
Burdigalian | Uganda | Trochozonites sp. (28441) | |
Holocene | Congo-Kinshasa | Trochozonites indet. (22073) |