Rare Jurassic Fossil Lungfish Tooth Plate – Sichuanodus / Ceratodus sp. Origin: Chongqing, Sichuan Basin, China Geological Age: Middle-Late Jurassic (approx. 150–165 Million Years Ago) Taxonomy: Sarcopterygii - Dipnoi - Ceratodontidae (Sichuanodus / Ceratodus) Specimen Details: Rare preserved lungfish tooth plate matrix-embedded, displaying sharp radiating ridges and characteristic porous enamel structure. Description: A very rare and well-preserved fossil lungfish tooth plate preserved on its original rock matrix, discovered from the Jurassic strata of Chongqing within the Sichuan Basin, China. Lungfish are iconic "living fossils" with specialized jaw plates evolved for crushing hard-shelled prey like freshwater crustaceans and mollusks. This specimen features striking black mineralization, crisp radiating ridge crests, and dense microscopic pores. A highly collectable aquatic specimen representing the prehistoric freshwater ecosystem of Southwest China.