On the size and flight diversity of giant pterosaurs, the use of birds as pterosaur analogues and comments on pterosaur flightlessness

Comparative scaling, bone mechanics and aerodynamic calculations make powered flight and quadrupedal launch feasible for sampled giant-pterosaur reconstructions, but do not directly observe launch or measure extinct mass, muscle power and kinematics.

Review and expanded anatomical analyses place Pterosauria within archosaur Ornithodira near dinosaurs, but its precise origin and closest relatives remain analysis-dependent.

Pterosaur remains are reported from every continent, but a 108-taxon analysis finds the record extremely patchy; package dossiers therefore remain tied to named specimens and localities rather than a complete distribution.

Pterosaurs support a membranous wing primarily on an elongate fourth finger; launch capacity and flight performance are biomechanical model outputs rather than preserved motions.

Pterosaurs occupied diverse aerial and coastal guilds, so no single diet, launch mode or habitat is generalized to the entire radiation.