NMITA:Neogene Marine Biota of Tropical America



Odontoscion dentex (Cuvier, 1830)



Specimen details:
 Sample Number: PPP3038
Type Status: nontype
Scale Bar is 1 mm
Type: SEM
Orientation: mesial
Locality: Caiguire, Caiguire, Venezuela

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Morphologic Description:

    Otolith shape: rhomboidal, very high;
    Thickness: thick;
    Form: -Mesial slightly convex;
    Form: -Lateral convex;
    Dorsal margin: angular and entire,;
    Dorsal margin sculpture: short and obtuse pre-dorsal spine;
    Ventral margin: slightly flat;
    Posterior margin: rounded, with a prominent dome dorsally, emarginated ventrally;
    Sulcus acusticus: ostial, heterosulcoid;
    Colliculum: heteromorph, low anterior and indistinct posterior colliculi;
    Pseudocolliculum: absent;
    Ostium: large and ovoid;
    Cauda: deep and wide, strongly flexed and ending close to ventral margin Intra-caudal crest present;
    Ostio-caudal differentiation: dorso-ventrally constricted;
    Collum: absent;
    Crista superior: poorly developed over ostium, ridge-like over anterior portion of the cauda;
    Crista inferior: poorly developed under ostium, well developed under cauda;
    Dorsal depression: very narrow and elongate;
    Ventral depression: absent;
    Rostrum: reduced or absent;
    Antirostrum: short and obtuse;
    Excisura: wide, notch absent;
Distribution:
    Early Pleistocene: Cumana Fm, Caiguire, Venezuela;

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