NMITA:Neogene Marine Biota of Tropical America



cf. Sparisoma sp.1



Specimen details:
 Sample Number: PPP2181
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 ovate;
    Thickness: moderately thick;
    Form: -Mesial convex;
    Form: -Lateral slightly convex;
    Dorsal margin: slightly straight to rounded;
    Dorsal margin sculpture: entire;
    Ventral margin: slightly rounded and irregular;
    Posterior margin: pointed, notched and irregular;
    Sulcus acusticus: ostio-caudal, approximately homosulcoid;
    Colliculum: homomorph, low, approximately oval colliculi;
    Pseudocolliculum: absent;
    Ostium: slight flare, deep and oval;
    Cauda: slightly flared;
    Ostio-caudal differentiation: dorso-ventrally constricted;
    Collum: low;
    Crista superior: ridge-like from mid-ostium to mid-cauda, well developed at extremes;
    Crista inferior: well developed along sulcus, may be poor under anterior ostium;
    Dorsal depression: oval and deep;
    Ventral depression: absent;
    Rostrum: broad and blunt;
    Antirostrum: short and rounded;
    Excisura: narrow, notch very shallow, angle wide;
Distribution:
    Late Pliocene: Escudo de Veraguas Fm., Bocas del Toro, Panama;

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