NMITA:Neogene Marine Biota of Tropical America



Aplodinotus hoffmani (Nolf & Aguilera, 1998)



Specimen details:
 Sample Number: PPP2541
Type Status: nontype
Scale Bar is 1 mm
Type: SEM
Orientation: mesial
Locality: Paraguana, Paraguana, Venezuela

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Morphologic Description:

    Otolith shape: oval becoming rectangular;
    Thickness: very thick;
    Form: -Mesial convex;
    Form: -Lateral convex;
    Dorsal margin: slightly flat;
    Dorsal margin sculpture: irregular;
    Ventral margin: gently rounded and entire;
    Posterior margin: slightly straight and entire;
    Sulcus acusticus: ostial, heterosulcoid;
    Colliculum: heteromorph, low anterior and indistinct posterior colliculi;
    Pseudocolliculum: absent;
    Ostium: trapezium-shaped and very quadrangular in its anterior part;
    Cauda: short, narrow and deep, strongly bent ventrally;
    Ostio-caudal differentiation: dorso-ventrally constricted;
    Collum: absent;
    Crista superior: poorly developed over ostium, ridge-like over cauda;
    Crista inferior: poorly developed under ostium, well developed along cauda;
    Dorsal depression: shallow and very narrow;
    Ventral depression: absent;
    Rostrum: reduced;
    Antirostrum: very short and rounded;
    Excisura: very narrow, notch absent;
Distribution:
    Early Miocene: Cantaure Fm., Paraguana, Venezuela;

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