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Retaria umbonata
Taxonomy
Retaria umbonata was named by Muir-Wood and Cooper (1960).
It was recombined as Kutorginella umbonata by Cooper and Grant (1975) and Hoover (1981).
It was recombined as Kutorginella umbonata by Cooper and Grant (1975) and Hoover (1981).
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1960 | Retaria umbonata Muir-Wood and Cooper |
1975 | Kutorginella umbonata Cooper and Grant p. 1030 |
1981 | Kutorginella umbonata Hoover p. 72 figs. Pl 6, figs 1-10 |
2004 | Retaria umbonata Waterhouse |
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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.
†Retaria umbonata Muir-Wood and Cooper 1960
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 12 | 13.6 | 4.70 | 18.4 | 16.8 | 4.88 |
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Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
References: Aberhan et al. 2004, Williams et al. 2000, Nesnidal et al. 2013 |
Collections (17 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Kungurian | USA (Texas) | Kutorginella umbonata (43495 43513 43515 81651 101785) | |
Kungurian | Venezuela (Merida) | Kutorginella umbonata (41505 41508 41513 41514 41516) | |
Roadian | USA (Texas) | Kutorginella umbonata (43512 43518 44749 102611 102621 106107 106109) |