| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Physa lactaena
Taxonomy
Physa lactaena was named by Russell (1935). Its type specimen is GSC 8851, a partial shell, and it is not a trace fossil. Its type locality is Deadhorse Coulee, Locality 8, which is in a Santonian terrestrial horizon in the Milk River Formation of Canada.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Physa lactaena Russell pp. 119-120 figs. Pl. 1:7 |
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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.
†Physa lactaena Russell 1935
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Bush and Bambach 2015, Kiessling 2004 | |||||
Age range: Late/Upper Santonian or 85.80000 to 83.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Santonian | Canada (Alberta) | Physa lactaena (type locality: 71486) |