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Mila parvula
Taxonomy
Mila parvula was named by Kříž and Serpagli (1993) [Mila parvula KřÞ in KřÞ & Serpagli]. Its type specimen is MO 22 970, a shell (left valve), and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1993 | Mila parvula Kříž and Serpagli pp. 329 – 330 figs. pl. 8, figs 13,15–18, 20 |
2008 | Mila parvula Kříž p. 244 fig. 3U |
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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.
†Mila parvula Kříž and Serpagli 1993
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Diagnosis
Reference | Diagnosis | |
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J. Kříž 2008 | The shell is inclined to the right while the shells from Sardinia are all inclined to the left. The right lower valve is opisthodetic, umbo in posterior position and prosogyrate with coiled beak. A little inflated anterior face is separated from the rest of the shell by a distinct bend curved anteriorly, formed by the anterior-most wide radial rib. Posterior wing well developed, separated from the central part of the valve by shallow radial sinus. Outer surface sculpture is composed of growth wrinkles and irregular narrow growth bands in combination with radial ribs, convex in cross-section and wide radial gutters. Both, the radial ribs and radial gutters broaden ventrally and are anteriorly curved. The radial ribs are narrower and less prominent in frontal face of the valve. 12 radial ribs are developed between anterior bend and posterior sinus separating the wing. Number of radial ribs in Sardinian specimens is similar (13–17). |