Answers are grounded in this paper and cite their sources.
Lance Grande, William E. Bemis, Osteology and Phylogenetic Relationships of Fossil and Recent Paddlefishes (Polyodontidae) with Comments on the Interrelationships of Acipenseriformes, Memoir (Society of Vertebrate Paleontology), Vol. 1, Osteology and Phylogenetic Relationships of Fossil and Recent Paddlefishes (Polyodontidae) with Comments on the Interrelationships of Acipenseriformes (Mar. 28, 1991), pp. ii+1-121
No takes yet. Share an insight, caveat, or question.
Grande et al. (1991) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: