NMITA:Neogene Marine Biota of Tropical America

Paraphidium aff. schmidti (Wood & Kanazawa, 1951)

Specimen details:
Sample Number: PPP1776
Type Status: nontype
Scale Bar is 1 mm
Type: SEM
Orientation: mesial
Locality: Limon, Limon, Costa Rica

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Morphologic Description:

    Otolith shape: circular;
    Thickness: very thick;
    Form: -Mesial very convex;
    Form: -Lateral very convex;
    Dorsal margin: rounded;
    Dorsal margin sculpture: entire;
    Ventral margin: rounded;
    Posterior margin: rounded and entire;
    Sulcus acusticus: ostial, heterosulcoid;
    Colliculum: heteromorph and low;
    Pseudocolliculum: absent;
    Ostium: large and superficial;
    Cauda: short, slightly flexed, ventrally;
    Ostio-caudal differentiation: ventrally slightly constricted;
    Collum: absent;
    Crista superior: poorly developed along entire sulcus;
    Crista inferior: poorly developed along entire sulcus;
    Dorsal depression: absent;
    Ventral depression: absent;
    Rostrum: rounded;
    Antirostrum: rounded;
    Excisura: narrow, notch absent;
    Early Pliocene: Quebrada Brasso, Limon, Costa Rica;

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