. The Bashford Dean memorial volume :. Fishes; Sharks; Fishes, Fossil. The Anatomy of Chlamydoselachus 397 should be consulted by anyone wishing a more complete account than is given here. Most of the pharyngeal muscles are represented in Text-figures 64 and 70 after Gregory (1933). The interarcuales dorsales (lad.) and subspinales () are shown in Text-figure 71, after AUis (1915), drawn from a specimen in which the interarcuales are somewhat atypical. In Text-figures 64 and 71 the methods of numbering the interarcuales differ, so that AUis's interarcualis IV corresponds to Gregory's inte
. The Bashford Dean memorial volume :. Fishes; Sharks; Fishes, Fossil. The Anatomy of Chlamydoselachus 397 should be consulted by anyone wishing a more complete account than is given here. Most of the pharyngeal muscles are represented in Text-figures 64 and 70 after Gregory (1933). The interarcuales dorsales (lad.) and subspinales () are shown in Text-figure 71, after AUis (1915), drawn from a specimen in which the interarcuales are somewhat atypical. In Text-figures 64 and 71 the methods of numbering the interarcuales differ, so that AUis's interarcualis IV corresponds to Gregory's interdorsaHs V. Text-figure 71- Ventral view of the roof of the pharyngeal cavity of Chlamydoselachus, after the lining mem- brane has been removed, showing the pharyngo- branchial cartilages, efferent arteries and inter- arcuales dorsales muscles in natural position. cc, common carotid artery; Coe, constrictor of the esophagus; eal, efferent branchial artery of the first branchial arch; eall, efferent branchial artery of the second branchial arch; EBII, epibranchial cartilage of the second branchial arch; EPB VI, epi-pharyngobranchial cartilage of sixth branchial arch; HMD, hyomandibular cartilage; lad IV, musculus interarcualis dorsalis between arches IV-V; ladhy, musculus interarcualis dorsalis between hyoid and first visceral arches; Ida, lateral dorsal aorta; !m!i, ligamentum mandibula' hyoideum; n., cut ends of nerves to tissues of roof of branchial chamber; PB I, pharyngobranchial cartilage of first branchial arch; PB IV, pharyngobranchial cartilage of the fourth branchial arch; Rabd, musculus retractor arcuum branchialium dorsalis; Ssp, subspinaUs muscle; tiad, ligamentous sheet formed by tendons of musculi interarcuales dorsales. After Alhs, 1915, Fig. Davidson (1918) classified the pharyngeal (branchiomeric) muscles of Heptanchus as follows: (1) superficial circular [constrictor] muscles; (2) interarcuales; (3) subspinales; (4) adductors; and (5) the hypobranchials. F
Size: 1215px × 2057px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, booksubjectfishes, booksubjectfishesfossil
