The Seca Formation is a Late Eocene (Divisaderan to Tinguirirican in the SALMA classification) geologic formation of the in southwestern Ecuador. The shales of the formation have provided fossils of the marine snake Pterosphenus sheppardi.
The Seca Formation is a Late Eocene (Divisaderan to Tinguirirican in the SALMA classification) geologic formation of the in southwestern Ecuador. The shales of the formation have provided fossils of the marine snake Pterosphenus sheppardi. (en)
The Seca Formation is a Late Eocene (Divisaderan to Tinguirirican in the SALMA classification) geologic formation of the in southwestern Ecuador. The shales of the formation have provided fossils of the marine snake Pterosphenus sheppardi. (en)