Variation in Rhamphorhynchus gemmingi

Yesterday we looked at phylogenetic variation in Rhamphorhynchus muensteri. Today we’ll tackle their sisters, R. gemmingi. Click to enlarge figure 1, shown to scale and in phylogenetic order from left to right. The outgroup taxon for both clades is the n62 specimen of Rhamphorhynchus. Shown here are n43, n74, n38, n75 and n52 from the Wellnhofer (1975) catalog.

Specimens nesting with Rhamphorhynchus gemmingi

Figure 1. Click to enlarge. Specimens nesting with Rhamphorhynchus gemmingi in phylogenetic order from left to right, n43, n74 (the holotype), n38, n75 and n52, otherwise known as R. megadactylus.

There’s not much more to say that the pictures say all too well. There’s variation here. Less and less as the taxa employed are more similar, but variation nevertheless. Perhaps there’s as much variation here as in several genera of birds from the same suprageneric clade.

As always, I encourage readers to see specimens, make observations and come to your own conclusions. Test. Test. And test again.

Evidence and support in the form of nexus, pdf and jpeg files will be sent to all who request additional data.

von Meyer H 1846. Pterodactylus (Rhamphorhynchusgemmingi aus dem Kalkschiefer von Solenhofen”. Palaeontographica 1: 1–20.
von Meyer H 1859. (Zur fauna der vorwelt, Vol. 4, Reptilien aus dem lithographischen Schiefer des Jura in Deutschland und Frankreich.
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.


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