. Fig. 7. The cartilaginous skeleton, cartilages shown black, a, stage 22; b, stage 26; c, stage 31; e, stage 34; d, pelvic girdle, stage 31. Scale: â ; 5. each two cartilages at this stage and metatarsals 2, 3, and 4 are quite well developed. In the fore-limb metacarpals 2 and 3 may be identified.

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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti