Genus: Istiodactylus HOWSE, MILNER & MARTILL, 2001
Etymology: Greek, istion, "sail" and Greek, daktylos, "finger"; for sail finger, descriptive of the wing of a large pterosaur.

Species: latidens (SEELEY, 1901) HOWSE, MILNER & MARTILL, 2001 (Type)
Etymology: Latin, latus, "wide" and Latin, dens, "tooth": referring to the flat wide teeth that are characteristic of this pterosaur.
= Ornithodesmus latidens SEELEY, 1901

Holotype: BMNH R 176

Locality: Atherfield, Isle of Wight County, Brook, England, Southern United Kingdom.

Horizon: Wessex Formation, Wealden Group.


Age: Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: Back of skull from the centre of orbits, a cervical vertebra, fragments of other vertebrae, a notarium, 5 consecutive dorsal vertebrae, 3rd and the proximal end of the 4th sacral vertebrae,
sternum, right humerus, proximal ends of radius and ulna, several carpals, proximal and distal ends of wing-metacarpal, fragments of wing-phalanges, proximal ends of both right and left wing phalanges.

Referred material:

BMNH R3877 (Hooley’s 1913 specimen 1): Skull, cervical and dorsal vertebrae, a scapula, an ischium and parts of both forelimbs.

BMNH R2878 (Hooley’s 1913 specimen 2): A block containing parts of a pectoral girdle and forelimbs.

CAMMZ T706: Almost complete rostrum and mandibles.


Species: sinensis ANDRES & JI, 2006
Etymology: From sino (Greek), pertaining to China or the Chinese; referring to the fact that the second occurrenc of Istiodactylus and the Istiodactylidae is in China.
= Genus: Nova ANDRES, 2003

Holotype: NGMC 99-07-011

Locality: Baitaigou Village, Toutai Township, Yixian County, Liaoning Province, China.

Horizon: Tuffaceous layers of hte Jiufotang Formation.


Age: Aptian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material: Skull, atlantoaxis, cervical vertebrae 3, 9 dorsal vertebrae, 13 rib fragments, scapulae and coracoids, most elements of both wings, the ventral portions of the pelvis, parts of both femora and tibiae, 4 pedal phalanges, and about 30 gastralia fragments.