NMITA:Neogene Marine Biota of Tropical America



Synodus sp.1



Specimen details:
 Sample Number: PPP1276
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: oblong;
    Thickness: thick;
    Form: -Mesial convex;
    Form: -Lateral flat;
    Dorsal margin: flattened or emarginate;
    Dorsal margin sculpture: irregular;
    Ventral margin: gently rounded and irregular;
    Posterior margin: flattened to rounded and irregular;
    Sulcus acusticus: ostial, heterosulcoid;
    Colliculum: heteromorph, very low anterior and posterior colliculi;
    Pseudocolliculum: absent;
    Ostium: elongate, slight dorsal flare, and ventral margin horizontal;
    Cauda: sinuate with ventral flexion;
    Ostio-caudal differentiation: dorso-ventrally constricted;
    Collum: absent, slight step to cauda;
    Crista superior: poorly developed over ostium;
    Crista inferior: well developed along length of sulcus, except at extremities;
    Dorsal depression: oval, above dorsal crista;
    Rostrum: sharply rounded;
    Antirostrum: small and rounded;
    Excisura: moderate, notch shallow, angle wide;
Distribution:
    Early Pliocene: Popa island, Bocas del Toro, Panama;

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