Genus: Rhamphinion PADIAN, 1984
Etymology: Greek, rhampho-, combination form of rhamphos, "beak," used in other rhamphorhynchoid names, and Greek, inion, "nape of neck"; referring to the occipital region comprising much of the present specimen.

Species: jenkinsi PADIAN, 1984
Etymology: In honor of Dr. Farish A. Jenkins, Jr., who discovered the specimen.

Holotype: MNA V 4500

Locality: 'Foxtrot Mesa', the southern side of Sand Mesa, along the Adeii Eechii cliffs, Ward's Terrace, Little Colorado River Valley, 35°41'43"N., 111°0'25"W, Coconino County, Northeast Arizona.

Horizon: Kayenta Formation, Glen Canyon Group.


Age: ?Sinemurian-Pliesbachian Stage, Middle-Upper Lias Epoch, Late Early Jurassic or Early Middle Jurassic.

Material: Left jugal, portion of lachrymal, possible fragment of pterygoid, jaw fragment with two teeth, left quadrate, occipital condyle, opisthotic, possible fragment of parietal, possible fragment of prootic, right quadrate.