Ludodactylus sibbicki SMNK PAL 3828 (Frey, Martill and Buchy 2003) is known from a skull with the unusual combination of a cranial crest and teeth. Ludodactylus was derived from a sister to Brasileodactylus and left no known descendants.

Distinct from Brasileodactylus, the skull of Ludodactylus was shorter overall with a parietal (cranial) crest with a frontal leading edge. The jugal was not expanded into the antorbital fenestra. The orbit was narrower. The postorbital was more robust. The mandible was more robust and was upturned anteriorly with smaller teeth posteriorly.

The ornithocheirid family tree is here. The entire pterosaur family tree is here.

A second Ludodactylus (MPSC R 4331), 27% smaller, is also known (see below).

Guidraco venator Wang et al.,2012 IVPP V17083, ~38 cm skull length, is a new crested ornithocheirid from the Lower Cretaceous of China. It nested as a sister to Ludodactylus and shares many traits with it and its South American sisters. An upright crest and enormous anterior teeth set it apart from the others.

Frey E, Martill DM and Buchy M-C 2003. A new crested ornithocheirid from the Lower Cretaceous of northeastern Brazil and the unusual death of an unusual pterosaur: In: Buffetaut, E., and J.-M. Mazin, Eds. Evolution and Palaeobiology of Pterosaurs. - London, Geological Society Special Publication 217: p. 55-63.

Wang X-L, Kellner AWA, Jiang S-X and Cheng X 2012. New toothed flying reptile from Asia: close similarities between early Cretaceous pterosaur faunas from China and Brazil. Naturwissenschaften in press. doi:10.1007/s00114-012-0889-1.

wiki/Ludodactylus

wiki/Guidraco