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Ulemica invisa
Taxonomy
Venjukovia invisa was named by Efremov (1940). Its type specimen is PIN 157/5, a skull, and it is a 3D body fossil. Its type locality is Kamenny Ravine (Ulema River), Isheevo, PIN 157, 2207, which is in an Urzhumian/Severodvinian fluvial sandstone/mudstone in the Russian Federation.
It was synonymized subjectively with Venyukovia prima by Battail and Surkov (2000); it was recombined as Ulemica invisa by Ivakhnenko (2003), Ivakhnenko (2008).
It was synonymized subjectively with Venyukovia prima by Battail and Surkov (2000); it was recombined as Ulemica invisa by Ivakhnenko (2003), Ivakhnenko (2008).
Synonymy list
| Year | Name and author |
|---|---|
| 1940 | Venjukovia invisa Efremov p. 123 |
| 2003 | Ulemica invisa Ivakhnenko |
| 2008 | Ulemica invisa Ivakhnenko |
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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.
†Ulemica invisa Efremov 1940
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum, p = phylum, uc = unranked clade | |||||
| References: Carroll 1988, Benton 1983, Kiessling 2004 | |||||
Age range: base of the Urzhumian to the top of the Early/Lower Severodvinian or 266.90000 to 259.51000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Urzhumian - Early/Lower Severodvinian | Russian Federation (Tatarstan) | Venjukovia sp. (type locality: 27931) |