A natural internal mould of the dorsal aspect of a head, showing the olfactory cup, velum, both n2 nerve canals, nerves n3, n4 and n5 of the left palmar complex, left pharynx, left and right atria, rectum, posterior coelom, prosencephalon, rhombencephalon, first tail somite, right anterior coelom, pleats of right pharynx, mid dorsal process and the oblique groove. From Osek Czechoslovakia.
Size: 26 mm x 22 mm on a block 50mm by 38mm
Size: 26 mm x 22 mm on a block 50mm by 38mm