Gat.No. m iy f Px*is cod e.i p nin u s sl&p op ius Oop© 
About 2 miles south of Chesapeake Beach (or 
0*5 miles south of RandJlct wharf) • Within a layer 
of greenish sandy clay not over 10 inches in 
thickness,and at a height of about 7 ft.above 
level of water at high tide. In Zone 5, immediate 
ly above layer of oyster shells ( Ostrea percrassa 
Zone 4). Norman II.Boss; June 7,1925* 
10 lumbars; 6 caudals (fragments 2 others); 
sternum;axis & 5 Succeeding cervicals;? dorsals; 
18 more or less complete ribs. 
Cat.No.10484, Squalodon calvertensis [Type] 
3.2 miles south of Chesapeake Beach; found in 
sandy clay 5 feet above beach level;oyster shell 
stratum is not visible at this point and is 
probably well under beach level. 
Zone 5 ; Norman H.Boss; July 8,1931. 
Nearly complete skull,including greater portion 
of rostrum;palatal region Incomplete;jugals are 
missing;right periotic preserved;4 molars, 3 pre- 
molars,^ 4 incisorlike teeth;a raandible;2 dorsal, 
3 lumbar vertebrae;6 isolated epiphyses;10 ribs; 
1 ulna. 
Cat.No.10949, Squalodon calvertensis 
4.3 miles south of Chesapeake Beach;at beginning 
of cliff south of Boy Scout camp;in sandy clay * 
feet above beach level. 
Zone ; Norman H.Boss; 
Imperfectly preserved skull;no ear-bones. 
Cat.No.10694, Squalodon sp. 
1 mile south of Chesapeake Beach, in freshly 
fallen beach talus debris which,apparently, was 
drived from Zone 10. 
a 2-rooted molar & fragment of a maxilla 
