. Description of the test specimen of the rostro-carinate industry found beneath the Norwich Crag . The dorsal plane has the same relation to the carina (TextFigs. 10 to 14, Car.) in both, but a somewhat deep fracture, F., has cleared away thecarina immediately in front of the dorsal plane, In front of F, we find the carina as a narrow ridge worked into shape by several small longitudinalfractures along the mid-line, car^, car, car in the figures, recalling the fracturedsurface of the carina of the Norwich specimen. Some very bold flaking has shapedthe left lateral surface. The large and
. Description of the test specimen of the rostro-carinate industry found beneath the Norwich Crag . The dorsal plane has the same relation to the carina (TextFigs. 10 to 14, Car.) in both, but a somewhat deep fracture, F., has cleared away thecarina immediately in front of the dorsal plane, In front of F, we find the carina as a narrow ridge worked into shape by several small longitudinalfractures along the mid-line, car^, car, car in the figures, recalling the fracturedsurface of the carina of the Norwich specimen. Some very bold flaking has shapedthe left lateral surface. The large and long fracture marked A in Text Figs. Rostro-Cannate Industry fomul heneath the Norvnch Crag. 13 10, 11, 13, 14, takes the place of the two large fractures A and B of the Norwichspecimen. Two large fractures, one on each side of the narrow tapering beak orrostrum (K on the left and Y on the right) are chiefly responsible for the form ofthat region, but numerous neatly made fractures have trimmed the lateral marginsinto shape where they meet the great ventral plane. These and the ventral plane,. Text Fig. 9.—Drawing of the rostro-carinate from Island Macgee, of the actual size, made bySir Ray Lankester. The specimen is tilted so as to show the left side and the dorsalplatform.
Size: 2355px × 1061px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlankestererayedwinray, bookcentury1900, bookdecade1910
