122 UPPER CRETACEOUS TELEOSTS 
REMARKS. The genus Sauvorhamphus is known by this single species originally 
described by Heckel (1850). Woodward (1go1 : 210) transferred it to the genus 
Eurypholis but this was later shown by d’Erasmo (1912 : 87) to be incorrect, Sauror- 
hamphus representing a distinct genus closely associated with Eurypholis. This 
latter conclusion is substantiated in the following description. 
Saurorhamphus freyeri Heckel 
(Text-fig. 55) 
1850 Sauvorhamphus freyeri Heckel : 217, pls. 18, 19. 
1946 Saurorhamphus freyeri Heckel ; d’Erasmo : 92, text-fig. 24. 
d’Erasmo lists the earlier references. 
DiaGnosis (emended). Saurorhamphus of standard length up to 18 cm. Length 
of head with opercular apparatus just over three times the depth of the head, equal 
to one-third of the standard length. Maximum depth of the mandible equal to 
one-seventh of the total length. Maxilla forms one-third of the oral border of the 
mouth and is untoothed. Operculum broader than deep. Dorsal fin in the mid- 
trunk region with 14 rays. Anal fin remote, with 15-16 rays arising well behind the 
dorsal fin, close to the caudal fin. 
HoLotyre. Complete flattened fish wanting snout, in the Natural History section, 
Prirodoslovni Muzej Slovenije, Ljubljana, Jugoslavia, from the Lower Cenomanian of 
Comen, near Trieste. 
MATERIAL. Only the holotype in Ljubljana was examined since none of the speci- 
mens used by d’Erasmo (1912, 1946) could be traced. 
DescripTion. Neurocranium. The posterior region of the skull-roof is the only 
part of the neurocranium which is at all well shown. The frontals occupy practically 
the entire roof, reaching back almost to the occiput. They are long and narrow and 
attain their greatest width at the rear end of the orbit above the sphenotic. The 
skull-roof is flat and ornamented with a regular arrangement of bony tubercles which 
radiate in all directions from the centre of ossification on the frontal. Anteriorly the 
frontal tapers gradually from the front end of the orbit and is inserted into the hind 
end of the mesethmoid. 
The supraoccipital is small and separates the transversely arranged parietals. It 
bears no indication of having had a supraoccipital crest, but each parietal bears a 
shallow, transverse, ornamented crest. The tubercular ornamentation seen on the 
frontals is continued on to the parietals and the supraoccipital. 
The pterotic forms the postero-lateral border of the skull-roof and dorsally 
appears as a narrow elongated strip of bone extending anteriorly on to the dorsal 
surface of the sphenotic. Posteriorly it projects slightly behind the level of the 
occiput and its dorsal surface is ornamented with bony tubercles. 
The sphenotic forms the postero-dorsal region of the orbit and projects laterally 
from beneath the frontal. Unlike the other roofing bones the sphenotic is unorna- 
mented. 
