| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Biarmeaspira verideclinata
Taxonomy
Biarmeaspira verideclinata was named by Mazaev (2006) [= Wortheniopsis sp.: Yakowlew, 1899, p. 129; non
Wortheniopsis grandicarinata Yakowlew, 1899; Nel’zina, 1978 (in Kalmykova et al., 1978), p. 22, pl. 1, figs. 26, 32.]. Its type specimen is PIN 4919/1-7, a shell, and it is a 3D body fossil. Its type locality is Krylogory Rift 4919/1, Pinega River, which is in a Sakmarian carbonate grainstone in the Kulogory Formation of the Russian Federation.
Sister species lacking formal opinion data
Synonymy list
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Biarmeaspira verideclinata Mazaev 2006
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. V. Mazaev 2006 | Shell trochiform. Subsutural ramp separated from the lateral surface by a distinct keel shoulder with narrow selenizone. Lateral surface subvertical and separated from the basal surface by well pronounced angulation. Suture located in the lower part of the lateral surface. Ornamentation consists of spiral ribs. On the early whorls, selenizone bordered by two spiral ribs. Shoulder keel marked by lower rib. Selenizone concave. On late whorls, upper part of selenizone remains on subsutural ramp and lower part of selenizone moves to lateral surface. Selenizone becomes convex. Spiral ribs bordering selenizone hold their thickness or become thinner. Selenizone smooth or covered by marked, sometimes cord-like lunulae. |