 Ichthyosauriforms did not recover in diversity after this turnover, with the Sauropterygia and Saurosphargidae driving a second wave of diversification lasting three to five million years.Motani and colleagues hypothesized in 2014 that "Cartorhynchus" was a suction feeder which fed by concentrating pressure in its narrow snout.This was further supported by the robustness of its hyoid and hyobranchial element (which would have anchored the tongue), and their incorrect observation of toothlessness.