Rhamphorhynchus gemmingi (von Meyer 1859) TM 6920/21, no. 38 in the Wellnhofer catalog, Late Jurassic, ~155 mya, was a sister to no. 43 and phylogenetically preceded no. 52. The top of the skull was lost at the edge of the matrix.

Distinct from no. 43, no. 38 had a more robust tail and m4.3 was subequal to m4.1 and m4.2. The deltopectoral crest was crescent-shaped. The sacrals were wider. The hind limbs were longer. Metatarsal IV was subequal to mt I.

See R. longiceps for size comparisons. See Campylognathoides C4 for a local family tree.

von Meyer CEH 1859. Zur Fauna der Vorwelt. Vierte Abt. Reptilien aus dem lithographischen Schiefer des Jura in Deutschland und Frankreich. 1. Lieferung: 1-84 & pls, 1859 and 2. Lieferung: 85-114 & pls, 1860.

Wellnhofer P 1975a-c. Teil I. Die Rhamphorhynchoidea (Pterosauria) der Oberjura-Plattenkalke Süddeutschlands. Allgemeine Skelettmorphologie. Paleontographica A 148: 1-33. Teil II. Systematische Beschreibung. Paleontographica A 148: 132-186. Teil III. Paläokolgie und Stammesgeschichte. Palaeontographica 149: 1-30.

wiki/Rhamphorhynchus