57 



Choewnisciis (figs. 43-45) 



C. godmani (fig. 43): Skiill: rostrum long and narrow, but less than half the skull length. 

 Braincase raised against rostrum, palatinal area elevated against skull base (in German 

 literature: airorhynch).If tlie skull is placed on the palate plane, the liighest point of the 

 skull is not reached by the frontalia - as in the remaining glossophagines - but instead 

 rather by the parietalia being separated by a distinct Fossa parietalis. Interorbital width 

 hard to determine, as no postorbital processes visible. Foramen infraorbitale situated 

 rostrad (within the anterior eighth of the total skull length, above the first upper premolar). 



Fig.43: Choeroniscus godmani skull, a: lateral view, b: dorsal view, c: basal view 



Skull base with conspicously elongated rectangular palate surface (width over canini 

 equals width over molars), roof of the palate almost reaching the Fossae mandibulares. 

 Pterygoids form long, shovel-like widened processes coming in contact with the 

 tympanohyoid bones at the bullae. Presphenoid smoothly adjoining the well vaulted 

 basisphenoid. Contiguous ridge between presphenoid and basioccipitale comparatively 

 broad, prolonged in two wings curving around the Foramen occipitale. 



Teeth: dental formula - 2 3 1 - - 3 4 5 6 7 



- - - 1 - 2 3 4 5 6 7 



Upper incisors very small, the outer ones being double the size of the iimer ones, 

 separated by a large medial diastema, very different in form: is flat, with stamp-shaped 

 crown and definitely tiny. I" almost caniniform, but though of twice the size of so small 

 that it does not match the height of the cingulum of the C\ Canines deUcate and narrow 

 with cingulum, length less than height of the maxillare at tliis level of the rostrum, 

 seperated from the anterior premolar (P^; Miller 1907) by a large diastema. Premolars 

 tricuspid, the middle conus being the highest, slightly exceeding cingulum C^ Base in 

 basal view elongated and narrow. Molars almost lacking a masticatory surface. There is 

 only a talon surrounding the hypoconus with the distal tip (metaconus) being the highest. 



C. minor (fig. 44): Skull witli comparatively long rostrum, only slightly shorter than 

 braincase; zygomatic arches very delicate, in most cases destroyed by preparation, but 



