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Proadusta rostralina
Taxonomy
Proadusta rostralina was named by Dolin and Lozouet (2004). Its type specimen is MNHN - IM - 3708, 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 rostralina Dolin and Lozouet pp. 28 - 29 figs. PI. 12 figs 3a-c, 4 |
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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 rostralina Dolin and Lozouet 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Dolin and P. Lozouet 2004 | La coquille, mince et fragile, de petite taille, est fuselee, a spire legeremem saillante, les callosites circumvemrales calleuses etam fortement margiuees. La sole vemrale est tres legerement convexe, l'ouverture est sinueuse. Le canal siphonal, etroit et relativemem profond, se situe clans le plan de la sole ventrale; il forme un pomet calleux, mais net et bien derache, fortement margine dorsalemcnt. Le pli terminal est simple, court et legeremem plongeant, en position tangeme; il se prolonge sans solution de cominuite par la lame interne courte et maigre, perlee. La fossula auriforme, relativemem petite, est lisse et tres faiblemem concave. ~angulation est abrupte et l'aire columellaire est convexe. La !evre interne porte 15 forts demicules columellaires, courts et serres, a cheval sur l' angulation. Le bourrelet calleux de l' extremite adapicale de la levre interne constitue un eperon calleux. Le canal exhalant, profond, est dejete adapicalemem; il forme un pomet calleux "en bee", bien degage, fortement margine dorsalemem. La levre externe, a quart amerieur pince, parte 20 (+3) demicules labraux courts, epais et serres, peu developpes. |