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"Larva of Lepidosiren." -Thomson, 1916

South American Lungfish Larva

"Larva of Lepidosiren." -Thomson, 1916

"Lepidosiren showing (Pc.f.) pectoral fin and the tufted pelvic fin (Pv.f.) of the mature male." -Thomson, 1916

South American Lungfish

"Lepidosiren showing (Pc.f.) pectoral fin and the tufted pelvic fin (Pv.f.) of the mature male." -Thomson,…