NMITA:Neogene Marine Biota of Tropical America



Thalassophryne sp.1



Specimen details:
 Sample Number: PPP2666
Type Status: nontype
Scale Bar is 1 mm
Type: SEM
Orientation: mesial
Locality: Manzanilla Bay, Manzanilla Bay, Trinidad

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Morphologic Description:

    Otolith shape: oval;
    Thickness: moderately thick;
    Form: -Mesial approximately flat;
    Form: -Lateral convex;
    Dorsal margin: rounded;
    Dorsal margin sculpture: irregular and lobed;
    Ventral margin: rounded, slightly irregular;
    Posterior margin: sharply rounded, slightly irregular;
    Sulcus acusticus: ostial, homosulcoid;
    Colliculum: homomorph;
    Pseudocolliculum: absent;
    Ostium: oval;
    Cauda: slightly oval in diagonal orientation;
    Ostio-caudal differentiation: slight dorso-ventral constriction;
    Collum: slightly raised and uneven;
    Crista superior: well developed;
    Crista inferior: well developed;
    Dorsal depression: oval;
    Ventral depression: absent;
    Rostrum: blunt and rounded;
    Antirostrum: absent;
    Excisura: poorly defined;
Distribution:
    Middle Miocene: Brasso Fm., Manzanilla Bay, Trinidad;

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