136 UPPER CRETACEOUS TELEOSTS 
lateral line sensory canal passed through the head of the supracleithrum and the 
post-temporal. The flattened dorsal surface of the post-temporal is ornamented 
with raised bony tubercles. 
The supracleithrum is expanded and overlaps the upper end of the cleithrum. 
The lateral face of the supracleithrum is ornamented with a few weak ridges. The 
cleithrum is sigmoid in shape with its anterior edge produced medially. The endo- 
skeletal girdle attaches to the internal face of the cleithrum. 
The scapula contacts the cleithrum laterally, the coracoid ventrally and the 
mesocoracoid antero-medially. A large scapular foramen perforates the centre of 
the bone. Postero-dorsally the scapula has a prominent facet with which the 
anterior fin ray articulated. The remainder of the posterior edge is grooved. The 
coracoid is much larger than the scapula and considerably expanded antero-ventrally. 
d. pt 
sca 
sca.for 
cor 
; 10mm , 
Fic. 62. Halec eupterygius (Dixon). Pectoral girdle of the left side in medial view. 
