Sphyrna gracile Cicimurri et al. 2025 (hammerhead shark)

Chondrichthyes - Carcharhiniformes - Sphyrnidae

Full reference: D. J. Cicimurri, J. A. Ebersole, G. L. Stringer, J. E. Starnes, and G. E. Phillips. 2025. Late Oligocene fishes (Chondrichthyes and Osteichthyes) from the Catahoula Formation in Wayne County, Mississippi, USA. European Journal of Taxonomy 984(3904):1-131

Belongs to Sphyrna according to D. J. Cicimurri et al. 2025

Sister taxa: Sphyrna americana, Sphyrna arambourgi, Sphyrna denticulata, Sphyrna gibbesii, Sphyrna guinoti, Sphyrna integra, Sphyrna itoriensis, Sphyrna laevissima, Sphyrna lata, Sphyrna lewini, Sphyrna magna, Sphyrna media, Sphyrna mokarran, Sphyrna prisca, Sphyrna robustum, Sphyrna tiburo, Sphyrna tortilis, Sphyrna zygaena

Type specimen: SC2013.28.158, a tooth. Its type locality is Jones Branch, which is in a Chattian marine sandstone in the Catahoula Formation of Mississippi.

Ecology: nektonic carnivore

Distribution: found only at Jones Branch

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Specimen images are retrieved through the ePANDDA API.


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