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Asthenotoma biconus
Taxonomy
Pleurotoma biconus was named by Edwards (1861) [DISTRIBUTION: Eocene; western Europe.]. It is not a trace fossil.
It was recombined as Asthenotoma biconus by Burton (1933).
It was recombined as Asthenotoma biconus by Burton (1933).
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1861 | Pleurotoma biconus Edwards pp. 318-319 figs. pl. 33, figs. 7a-b |
1933 | Asthenotoma biconus Burton |
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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.
†Asthenotoma biconus Edwards 1861
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: superf = superfamily, c = class | |||||
References: Hendy et al. 2009, Kiessling 2004 |
Age range: base of the Bartonian to the top of the Late/Upper Eocene or 41.30000 to 33.90000 Ma
Collections (3 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Bartonian | United Kingdom (England) | Asthenotoma biconus (42636) | |
Late/Upper Eocene | United Kingdom (England) | Pleurotoma biconus (42584 42585) |