| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Praenucula abrupta
Taxonomy
Praenucula abrupta was named by Kříž and Steinová (2009). Its type specimen is JK 14944, a valve (right valve), and it is a 3D body fossil. Its type locality is Temporary outcrop just northwest of Běchovice, which is in a Hirnantian transition zone/lower shoreface shale in the Kosov Formation of the Czech Republic.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Praenucula abrupta Kříž and Steinová p. 414 figs. 3A, B, E–H |
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.
†Praenucula abrupta Kříž and Steinová 2009
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Kříž and M. Steinová 2009 | Praenucula with triangular shell, prominent prosogyrate umbones, and with concave anterior part of the dorsal margin.
part of the shell is larger. Anterior part of the dorsal margin is concave, posterior part straight. Anterior and posterior margins rounded, ventral margin convex. Prominent umbones are in the posterior half of the shell length or in central position, prosogyrate. Hinge taxodont. Posteriorly of umbo the teeth are small (7–10 in number), anteriorly slightly larger (7–8 in number). In posterior part of the shell the hinge line is straight. In anterior part of the shell the hinge line is concave. Inner surface with narrow growth bands and furrows developed. Anterior adductor muscle scar rounded. Other muscle scars unknown. Outer surface sculpture and the shell thickness are unknown. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: g = genus, f = family, c = class | |||||
| References: Meyer et al. 2009, Hendy 2009, Aberhan et al. 2004 | |||||
Age range: Hirnantian or 445.20000 to 443.40000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Hirnantian | Czech Republic (Praha) | Praenucula abrupta (type locality: 149320) |