NMITA:Neogene Marine Biota of Tropical America

Snyderidia bothrops (Robins & Nelson, 1970)

Specimen details:
Sample Number: PPP2554
Type Status: nontype
Scale Bar is 1 mm
Type: SEM
Orientation: mesial
Locality: Araya, Araya, Venezuela

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Morphologic Description:

    Otolith shape: oval;
    Thickness: thick;
    Form: -Mesial flat;
    Form: -Lateral convex;
    Dorsal margin: slightly flat to rounded;
    Dorsal margin sculpture: slightly irregular;
    Ventral margin: slightly flat, to rounded and irregular;
    Posterior margin: slightly rounded and irregular;
    Sulcus acusticus: para-ostial, homosulcoid;
    Colliculum: homomorph, with single horizontal colliculum;
    Pseudocolliculum: absent;
    Ostium and Cauda: undifferentiated, sulcus oblong, large and slightly flexed ventrally;
    Ostio-caudal differentiation: no constriction;
    Collum: absent;
    Crista superior: well developed along the entire sulcus;
    Crista inferior: well developed along the entire sulcus;
    Dorsal depression: very shallow and elongate;
    Ventral depression: absent;
    Rostrum: short and rounded;
    Antirostrum: reduced;
    Excisura: very narrow;
    Early Pliocene: Cubagua Fm., Araya, Venezuela;

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