Leperditia, sp., cf. Leperditia hisingeri, Schmidt.
5.
Primitia, sp. indt.
(O)—In a drab coloured dolomitic limestone:
Cephalopoda.
1.
A portion of some gyroceran or orthoceratite shell; resembles in some respects the external characters of Orthoceras nicolleti figured in Vol. iii., part 11, of the Palæontology of Minnesota, Pl. 55, fig. 1.
(P)—In a yellowish-gray dolomitic limestone:
Cephalopoda.
1.