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Praeleda compar
Taxonomy
Nucula compar was named by Barrande (1881). It is a 3D body fossil.
It was recombined as Praeleda compar by Pfab (1934), McAlester (1968) and Kříž and Steinová (2009).
It was recombined as Praeleda compar by Pfab (1934), McAlester (1968) and Kříž and Steinová (2009).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1881 | Nucula amica Barrande figs. pl. 271 f. III/1–14 |
| 1881 | Nucula compar Barrande figs. pl. 271 f. III/1-14 |
| 1934 | Praeleda compar Pfab p. 231 figs. pl. 3 f. 1-3 |
| 1968 | Praeleda compar McAlester p. 46 figs. pl. 7 f. 1-9; pl. 8 f. 1-2 |
| 2009 | Praeleda compar Kříž and Steinová pp. 416 - 417 figs. 3N–Q, 4A–E |
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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.
†Praeleda compar Barrande 1881
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Invalid names: Praeleda amica Barrande 1881 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Kříž and M. Steinová 2009 | Praeleda with broadly subelliptic to ovate shells, with 7 to 8 teeth in the anterior part of the hinge and with 15–20 teeth in the posterior part of the hinge.
Small, equivalve, inequilateral, and broadly subelliptic to ovate shell. Anterior and posterior margins evenly rounded, ventral margin convex. Anterior part is larger part of the shell. Umbones are in the posterior half of the shell length. Dorsal margin in the anterior part of the shell is slightly concave, in the posterior part of the shell it is convex. Outer surface sculpture consists of numerous, regularly spaced growth bands and furrows. Inner surface sculpture is smooth. The hinge taxodont, the posterior part with small numerous teeth (15–20 in number), and the anterior part of the shell with abruptly much larger teeth (7–8 in number). Teeth row between the umbones is not interrupted. Anterior adductor muscle scar elliptic and larger than rounded posterior adductor muscle scar. One pair of rounded pedal muscle scars (protractors) is developed posteriorly from the anterior adductor muscle scars, one pair of transverse elliptic pedal muscle scars (retractors) is developed anteriorly from the posterior adductor muscle scar, and two pairs of the narrowly elliptical accessory muscle scars are developed in the umbonal region. |
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009 | |||||
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) | Praeleda compar (149320) |