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Retusa obtusa
Taxonomy
Bulla obtusa was named by Montagu (1808) [DISTRIBUTION: Late Pliocene-Recent; Greenland, Great Britain-Florida. TYPE: Syntypes.]. It is extant. Its type specimen is RAMM 4073-4087, a shell.
It was recombined as Retusa obtusa by Abbott (1954), Spencer and Campbell (1987), Hendy et al. (2008).
It was recombined as Retusa obtusa by Abbott (1954), Spencer and Campbell (1987), Hendy et al. (2008).
Sister species lacking formal opinion data
R. adamsi, R. adamski, R. apicina, R. candei, R. consors, R. conulus, R. elongata, R. emoryi, R. kellogii, R. microconcha, R. minima, R. minutissima, R. notata, R. plicatella, R. plicifer, R. promamillata, R. scutata, R. semisulcata, R. subangystoma, R. sylvaerupis, R. testiculina, R. umbilicata, R. vaginata, R. woodwardi, R. adamsi, R. adamski, R. arcana, R. bastropensis, R. clathrata, R. elongata, R. emoryi, R. kellogii, R. minuta, R. notata, R. notata, R. praemoryi, R. quercinensis, R. quercinensis, R. quercinensis, R. subangistoma, R. sylvaerupis, R. rugosa, R. apiculata, R. canaligradata, Utriculus pertenuis
Synonymy list
| Year | Name and author |
|---|---|
| 1808 | Bulla obtusa Montagu pp. 22-224 figs. pl. 7, fig. 3 |
| 1954 | Retusa obtusa Abbott p. 2780 |
| 1987 | Retusa obtusa Spencer and Campbell p. 72 |
| 2008 | Retusa obtusa Hendy et al. |
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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.
Retusa obtusa Montagu 1808
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range: base of the Early/Lower Pleistocene to the top of the Holocene or 2.58000 to 0.00000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pleistocene | Greenland | Retusa obtusa (75092 75099) | |
| Early/Lower Pleistocene | United Kingdom (England) | Retusa obtusa (97968 98038) | |
| Middle Pleistocene (late glacial) | Canada (New Brunswick) | Retusa obtusa (210895) | |
| Late/Upper Pleistocene | USA (Virginia) | Retusa obtusa (69049) | |
| Late/Upper Pleistocene | Netherlands | Retusa obtusa (98196 98197 98205) | |
| Holocene | Canada (Nunavut) | Retusa obtusa (48463) | |
| Holocene | Greenland | Retusa obtusa (75220) |