. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 72 Annals of the South African Museum. part of the jaw makes an angle with the lower border of the ramus similar to that in Aelurosaurus tenuirostris. The splenial forms part of the symphysis. The angular extends far forward as a slender wedge between the dentary and splenial. Shoulder Girdle.—Among the portions of the postcranial skeleton preserved is a fairly complete shoulder girdle. The chief features displayed are the large size of the clavicles and inter- clavicle. The scapula was prob- ably ab
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 72 Annals of the South African Museum. part of the jaw makes an angle with the lower border of the ramus similar to that in Aelurosaurus tenuirostris. The splenial forms part of the symphysis. The angular extends far forward as a slender wedge between the dentary and splenial. Shoulder Girdle.—Among the portions of the postcranial skeleton preserved is a fairly complete shoulder girdle. The chief features displayed are the large size of the clavicles and inter- clavicle. The scapula was prob- ably about 100 mm. long. Its proximal end is broad, with a broad, thin, anterior, supracoracoid plate. Above this the bone narrows con- siderably, and then swells into a thin plate whose dis- tal width is about 38-40 mm. There is no acromion process. The scapula forms half of the glenoid cavity, which faces largely down- wards, and there is a strong, ridged, supraglenoid border. The precoracoid and cor- acoid are largely covered in the specimen in ventral view by the clavicle and interclavicle, and undoubt- edly in life the precoracoid was largely underlain by the mesial expansion of the clavicle. The precoracoid forms part of the border of the glenoid cavity. This participation of the precoracoid in the glenoid is an unusual feature in the Therap- sids, as far as the structure of the shoulder girdle is known within the group. The clavicle is an unusually large bone with a strongly expanded mesial end. In anterior view it is a bent blade some 90 mm. in length, which is wider distally than proximally. In ventral view it is seen that the mesial portion of the bone is widely expanded towards the. Fig. 15.—Dorsal view of type skull of Lycae- nodontoides bathyrhinus gen. et sp. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
