Named By: Johann Wagner - 1861.
Synonyms: Brachytrachelus crassirostris, Pachyrhamphus crassirostris, Pterodactylus crassirostris, Ornithocephalus crassirostris, Rhamphorhynchus crassirostris.
Classification: Chordata, Reptilia, Pterosauria, Rhamphorhynchoidea, Rhamphorhynchidae, Scaphognathinae.
Species: S. crassirostris (type).
Type: Probably an insectivore.
Size: 90 centimetre wingspan.
Known locations: Germany - Solnhofen Limestone.
Time period: Kimmeridgian of the Jurassic.
Fossil representation: Three specimens.
acquired the somewhat unglamorous name of 'Tub jaw' because of the
robust snout construction. Still when first described, Scaphognathus
was included into the pterodactyloidea because of the lack of a tail.
This lack of tail actually misled the original examiner as in realty it
had just failed to fossilise with the rest of the specimen. A second
individual of Scaphognathus had the tail preserved
and this discovery
brought the revelation that Scaphognathus instead
belonged with the
basal rhamphorhynchoid pterosaurs.
The teeth of Scaphognathus are widely spaced and arranged vertically. Scaphognathus could quite easily have lived an insectivorous lifestyle, although other prey items are not completely out of the question.
The skull of Scaphognathus is the key area that makes it identifiable, and across the top of the skull is a bony growth. This bone may have actually been the support for a head crest in life, although so far no crest has been found with any of the specimens. This does not necessarily mean there was no crest in life, as had there been one it would likely have been made from soft tissue such as keratin, which does not preserve well if at all.
Apart from differences in the skull, Scaphognathus was morphologically similar to Rhamphorhynchus and Harpactognathus, particularly with a potential crest similarity to Harpactognathus. Also, like Rhamphorhynchus, scleral rings indicate Scaphognathus was probably nocturnal.