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Goniophora compta
Taxonomy
Goniophora compta was named by Kříž (2008). Its type specimen is JK 11838, a shell (conjoined valves), and it is a 3D body fossil. Its type locality is Section No. 942, Liščí;í Quarry near Amerika gamekeepers lodge, Karlštejn, which is in a Gorstian carbonate limestone in the Czech Republic.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Goniophora compta Kříž pp. 264 – 266 figs. 9Q–X, 10A–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.
†Goniophora compta Kříž 2008
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Kříž 2008 | The Ludlow Goniophora with long dorsal margin, narrowly elongated, and with outer surface sculpture composed of prominent numerous radial riblets in combination with numerous narrow growth bands and furrows.
Shell medium in size (L ≥ 34.3, H = 15.9,W≥ 22.5), lanceolate, equivalve, strongly inequilateral, posteroventrally narrowly elongated, and inflated (H/W ≥ 0.70–0.84). No byssal gape. Umbones prominent, in almost terminal anterior position, closely incurved, prosogyrate. Each valve subdivided by sinuous, prominent diagonal carina between umbo and postero-ventral extremity, with rounded crest. Dorsal margin line long, slightly convexly curved. Anterior margin is lobate, ventral margin long, concave. Its anterior part is almost parallel with the dorsal margin. Ventral extremity, where umbonal ridge ends, is rounded. Posterior margin relatively short, convex. Ventrally of the dorsal margin radial sulcus widening ventrally separates wing like development of the posterior part of the shell. Interior of the carina is composed of interior transversal segments, corresponding by width approximately to the width of the growth band (Fig. 9Q, JK 11849). Each segment has wide base, connected with the inner thin layer of the shell. Laterally the width decreases and in highest part of the umbonal ridge again increases. The top of the segment is rounded. The carina is covered by thin shell with radial riblets. Outer surface sculpture is composed of prominent numerous radial riblets in combination with growth wrinkles and numerous narrow growth bands and furrows. Inner surface sculpture almost smooth, sometime with faint radial ribs visible. Hinge unknown. Anterior and posterior reinforcement ridges well developed close to the dorsal margin. Anterior adductor muscle scar is elliptical, deeply impressed on the inner side of the anterior lobe. Other muscle scars and hinge not observed. Shell wall is 0.17–0.51 mm thick. |
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009 | |||||