Annals of the South African MuseumThe Museum, 1973 - Natural history |
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Page 6
... length from Raja straeleni to R. clavata . In the latter species the length of the prepelvic processes approximates to that of Arhynchobatis asperrimus . Furthermore , slight anterior arching of the ischiopubic bar is seen in Raja ...
... length from Raja straeleni to R. clavata . In the latter species the length of the prepelvic processes approximates to that of Arhynchobatis asperrimus . Furthermore , slight anterior arching of the ischiopubic bar is seen in Raja ...
Page 59
... lengths of the rostra in relation to cranial length are given in Table 2 . TABLE 2 Rostral length expressed as a percentage of the cranial length in southern African Rajidae . Species C. parcomaculata No. of specimens Mean % C ...
... lengths of the rostra in relation to cranial length are given in Table 2 . TABLE 2 Rostral length expressed as a percentage of the cranial length in southern African Rajidae . Species C. parcomaculata No. of specimens Mean % C ...
Page 75
... length of the rostrum in relation to the cranial length may be used for the grouping of species and for the interpretation of phylogenetic relationships . He has pointed out that the rostral length is greater than the ' cranial length ...
... length of the rostrum in relation to the cranial length may be used for the grouping of species and for the interpretation of phylogenetic relationships . He has pointed out that the rostral length is greater than the ' cranial length ...
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Common terms and phrases
a.tr-accessory terminal accessory terminal Amblyraja Anacanthobatis americanus ax-axial axial cartilage Bathyraja smithii Fig Bigelow & Schroeder Bonde & Swart Cape Point Cartilages of right cavity clasper glans clasper structure cleft Cruriraja parcomaculata Cruriraja triangularis d.tr-dorsal terminal dermal denticles developed Dipturus distal distal end distribution dorsal lobe dorsal terminal dorsal terminal cartilages elongate fontanelle foramen formed genus genus Cruriraja glans Hulley iliac regions Ishiyama & Hubbs Leigh-Sharpe leopardus Leucoraja metres mg d Myliobatis cervus nasal capsules neurocranium outer lateral margin pecten pelvic girdle posterior prepelvic processes proximal pseudorhipidion pseudosiphon Raja caudaspinosa Raja clavata Raja doutrei Raja miraletus Raja pullopunctata Raja radiata Raja wallacei Rajella Rajidae Rajoidea ravidula Rhinobatidae Rhinobatos annulatus Rhinobatos halavi Rhinoraja rhipidion robertsi rostral rostral cartilage Rostroraja Scale 2,0 cm sentinel southern African Rajidae southern African region species Raja spike springeri Stehmann stenorhynchus subgenus subgenus Raja temperature terminal cartilage ventral terminal cartilage view of right wallacei Fig