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Leptaena orhor
Taxonomy
Orhoria orhor was named by Havlicek and Storch (1990). Its type specimen is VH 4406b, a valve (Pedicle valve), and it is a 3D body fossil.
It was recombined as Leptaena orhor by Havlicek and Storch (1999).
It was recombined as Leptaena orhor by Havlicek and Storch (1999).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Orhoria orhor Havlicek and Storch pp. 74 - 75 figs. Pl. XVI, fig. 18 |
| 1999 | Leptaena orhor Havlicek and Storch |
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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.
†Leptaena orhor Havlicek and Storch 1990
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| V. Havlicek and P. Storch 1990 | Shell small for the genus, 7.5--:-10.0 Il1m wide, anteriorly geniculate. Disc ofpedicle valve gently convex umbonally but flat to slightly concave near anterior margin; peripheral rim clearly developed only at antero-lateral sides of the. disc but indistinct in the median sector where it 'is substituted by a prominent edge at the disc/trail boundary. Disc rectrangular in outline, 52-60% as long as wide, with nearly parallel sides. Hinge line extends into short ears. Pseudodeltidium and pedicle foramen not examined. Trail short; nearly perpendicular to the disc.
Brachial valve gently convex around periphery of its disc but gently concave in area surrounding the elongate protegular node. Dorsal disc separated by a rather deep furrow from the ventrally directed trail. Ribs low, rounded, 3-4 per 1 mm at anterior margin of the disc, crossed by somewhat stronger rugellae (about 2 per 1 mm anteriorly). When partly exfoliated, the rather coarse radially disposed papillae are exposed for examination. |