NMITA:Neogene Marine Biota of Tropical America



Cynoponticus savanna (Bancroft, 1831)



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

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Morphologic Description:

    Otolith shape: oblong;
    Dorsal margin sculpture: irregular;
    Posterior margin: sharply rounded or blunt and irregular;
    Ventral margin: rounded, slightly irregular;
    Dorsal depression: oblong;
    Crista inferior: well developed;
    Crista superior: well developed in mid to posterior sulcus;
    Collum: absent;
    Ostio-caudal differentiation: no constriction;
    Ostium and Cauda: not differentiated;
    Pseudocolliculum: absent;
    Colliculum: homomorph, single raised colliculum;
    Excisura: narrow or moderate, notch very shallow, angle wide;
    Antirostrum: absent;
    Rostrum: large, sharply rounded;
    Ventral depression: absent;
    Sulcus acusticus: para-ostial, archaesulcoid;
    Dorsal margin: flattened;
    Thickness: medium thick;
    Form: -Mesial approximately flat;
    Form: -Lateral slightly convex;
Distribution:
    Early Miocene: Cantaure Fm., Paraguana, Venezuela;

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