NMITA:Neogene Marine Biota of Tropical America



Gymnothorax sp.1



Specimen details:
 Sample Number: PPP2187
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: elliptic and wedge-shaped;
    Posterior margin: pointed and slightly irregular;
    Ventral margin: rounded and slightly irregular;
    Crista inferior: moderately well developed;
    Crista superior: moderately well developed;
    Collum: absent;
    Ostio-caudal differentiation: slight dorso-ventral constriction;
    Cauda: narrower, almost horizontal with slight ventral curve, with shallow post-caudal groove;
    Ostium: short, flares and slopes anteriorly;
    Pseudocolliculum: absent;
    Colliculum: homomorph, single, indistinct colliculum;
    Excisura: moderately wide, notch very shallow, angle wide;
    Antirostrum: small and pointed;
    Rostrum: minute and rounded;
    Ventral depression: very shallow and oval;
    Dorsal depression: absent;
    Sulcus acusticus: ostial, heterosulcoid;
    Thickness: moderately thin;
    Form: -Lateral flat;
    Dorsal margin: slightly rounded;
    Dorsal margin sculpture: slightly irregular;
    Form: -Mesial convex;
Distribution:
    Late Pliocene: Escudo de Veraguas Fm., Bocas del Toro, Panama;

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