NMITA:Neogene Marine Biota of Tropical America

Bathyclupea sp.1

Specimen details:
Sample Number: PPP1241
Type Status: nontype
Scale Bar is 1 mm
Type: SEM
Orientation: mesial
Locality: Bocas del Toro, Bocas del Toro, Panama

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Morphologic Description:

    Otolith shape: becoming rectangular inclined;
    Thickness: moderately thick;
    Form: -Mesial convex;
    Form: -Lateral slightly convex;
    Dorsal margin: straight and short;
    Dorsal margin sculpture: lobed;
    Ventral margin: slightly rounded and irregular;
    Posterior margin: straight, inclined and irregular;
    Sulcus acusticus: ostial, heterosulcoid;
    Colliculum: heteromorph, slightly raised anterior, indistinct posterior colliculi;
    Pseudocolliculum: absent;
    Ostium: oval and short;
    Cauda: short and straight;
    Ostio-caudal differentiation: dorso-ventrally constricted;
    Collum: absent;
    Crista superior: very poorly developed over ostium, well developed over cauda;
    Crista inferior: poorly developed under ostium, well developed under cauda;
    Dorsal depression: shallow and oval;
    Ventral depression: absent;
    Rostrum: short and broad;
    Antirostrum: minute and rounded;
    Excisura: narrow, notch very shallow, angle wide;
    Late Pliocene: Escudo de Veraguas Fm., Bocas del Toro, Panama;

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