[5] D. bucklandi is based on its holotype, a now lost[5] jaw from the Taynton Limestone Formation that was described as a species of Pterodactylus in 1832,[2] and the list of known specimens are: NHMUK PV R 28610, 32752, 37765, 38014, 38015, 38016, 38017, 38019, 38020, 38025, 40126, 47994, 47999a, 1028, 1029, 1030, 1824, 2637, 6749, 6750 (Steel 2012); OUM J.28275, J.28537, J.283043, which include limb elements that show no crossover with the holotype jaw.

[4] D. depressirostris is based on its holotype, GSM 113723 (a mandible), and NHMUK PV R 40126 (isolated limb elements) and GSM 113723 has been damaged with the right ramus broken off and reattached.

[5] The teeth of D. depressirostris reached up to 15 inches (38 cm) long and the elongate jaw, thin bone walls, the dental arrangement and smooth bone texture confirmed that it was a pterosaur.

[5] Both species of Dolicorhamphus were assigned to the wastebasket genus Rhamphocephalus, considered a "rhamphorhynchoid" pterosaur.

However, the type species of Rhamphocephalus, R. prestwichii, was reinterpreted as a thalattosuchian by O'Sullivan and Martill on 2018, but "R." depressirostris and "R." bucklandii were clearly pterosaurian; the former was considered to be in the Scaphognathinae while the latter was only referred to a more general Rhamphorhynchidae.