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Tetinka sagitta
Taxonomy
Tetinka sagitta was named by Barrande (1881). Its type specimen is NM L 26 517 and is a 3D body fossil. It is the type species of Tetinka.
Synonyms
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Synonymy list
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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.
†Tetinka sagitta Barrande 1881
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Invalid names: Spanila serva Barrande 1881 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Kriz 2011 | Tetinka with dorso-ventrally elongated (H/L = 2.3–3), inequivalve, inequilateral, narrowly subtriangular, and inflated shells (L/W = 1–1.6). Enantiomorphous, distinctly inclined to the right. Umbonal angle in the left upper valve is 18–21°. In the left valve slightly overhanging, inflated and lanceolate frontal face is separated from the central part of the shell by blunt edge, mostly straight. Posterior wing is very long, separated from the central part of the shell by shallow and relatively wide radial sulcus ending in the longest part of the shell far ventrally below the half of the shell height. Outer and inner surface sculpture with irregularly spaced relatively wide prominent growth bands and furrows. Inner surface radial ribs are prominent on frontal face (13–18) and posteriorly of posterior wing (6). The central part of the shell is smooth. Relatively large, elliptic posterior adductor muscle scar is developed close to the wing in the place of sulcus. |
Measurements
No measurements are available
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| Source: subc = subclass, c = class | |||||
| References: Aberhan et al. 2004, Eaton 1871 | |||||
Age range: base of the Ludfordian to the top of the Pridoli or 425.00000 to 419.62000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ludfordian | Czechia (Praha) | Tetinka sagitta (233146 233160 233173) | |
| Ludfordian | Czechia | Tetinka sagitta (14037) | |
| Pridoli | Czechia (Cikana) | Tetinka sagitta (233174) |