Richter, M. (2017). Early Devonian (Late Emsian) shark fin remains (Chondrichthyes) from the Paraná Basin, southern Brazil. Academia Brasileira de Ciências.
Chicago Style (17th ed.) CitationRichter, Martha. Early Devonian (Late Emsian) Shark Fin Remains (Chondrichthyes) from the Paraná Basin, Southern Brazil. Academia Brasileira de Ciências, 2017.
MLA (9th ed.) CitationRichter, Martha. Early Devonian (Late Emsian) Shark Fin Remains (Chondrichthyes) from the Paraná Basin, Southern Brazil. Academia Brasileira de Ciências, 2017.
Warning: These citations may not always be 100% accurate.