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Proadusta parvissima
Taxonomy
Proadusta parvissima was named by Dolin and Lozouet (2004). Its type specimen is MNHN-IM-2000-3706, a shell, and it is a 3D body fossil. Its type locality is Espibos, Gaas, which is in a Rupelian carbonate marl/sandstone in the Calcaire à Astéries Formation of France.
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Proadusta parvissima Dolin and Lozouet p. 58 figs. PI. 11 figs 1a-e, 2 |
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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.
†Proadusta parvissima Dolin and Lozouet 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Dolin and P. Lozouet 2004 | La coquille, solide quoique peu calleuse, de tres petite taille, est tronconique, ampoulee de profil, a spire saillame. La sole vemrale est legeremem convexe, I' ouverture est parasigmoldale. Le canal siphonal, etroit, relativemem profond, se situe clans le plan de la sole ventrale ; il forme un petit pontet net, bien detache. Le pli terminal est simple, court et legeremem plongeam, en position tangenre ; il se prolonge sans solution de continuite par la lame interne courte et maigre, perlee. La fossula auriforme, relativement petite, est lisse et concave. ~angulation est abrupte et l'aire columellaire est convexe. La levre interne pone 16(+1) demicules columellaires puissants, espaces, a cheval sur !'angulation et s' allongeam clans le tiers median de la levre interne sur le premier mm de la sole ventral e. Le canal exhalant, profond, est court et dejete adapicalemem, formam un pontet calleux. La levre externe, a quart amerieur pince, parte 20( +2) denticules labraux, puissants et regulieremem espaces : caracteristiques ils se prolongem obscurement sur le 113 adapertural de la levre externe. |