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Amphicoelia pojetana
Taxonomy
Amphicoelia pojetana was named by Kříž (2008). Its type specimen is JK 11669, a shell (right valve with ligament area and byssal), 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.
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Amphicoelia pojetana Kříž pp. 248 – 249 fig. 5B–K |
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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.
†Amphicoelia pojetana Kříž 2008
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Kříž 2008 | Amphicoelia with numerous flat ribs and narrow
radial gutters. Medium (L ≥ 70.0; H ≥ 70.0), equivalved, inequilateral, obese and prosocline shells (L/W = 1.77–2.18, H/W = 1.33–2.25). Umbones are terminal, prosogyrate. Cardinal margin is long and straight. Anterior part relatively short, anterior margin convex, evenly rounded ventral and posterior margins. Posterior wing well developed. Outer surface sculpture formed by prominent numerous ribs convex in cross-section in combination with narrow radial gutters. Both the radial ribs and radial gutters broaden ventrally. Growth sculptures consists of growth wrinkles, irregularly distributed growth furrows and very low, weak growth bands. Commissure lies within a single plane, no discernible byssal gape. Shell relatively thin (0.48–0.76 mm). Byssal sinus prominent, developed right between umbones. Ligamental area with duplivincular grooves and ridges, transversally obliquely several times folded. No dentition. |