. Bonner zoologische Monographien. Zoology. 17 entopterygoid pterygoid type 1 tendon bone origin 'entopterygoid' 'ectopterygoid' The bones which originate from cartilaginous arches exhibit chondral ossification, and those of dermal origin exhibit dermal ossification (that is, they do not include a car- tilaginous precursor). Ossification of the cartilaginous arches giving rise to the bones of the Suspensorium begins at the surface, they therefore exhibit perichondral ossification. In addition, bones such as the hyomandibula, symplectic, metapterygoid, and quadrate may have membranous outgrowth
. Bonner zoologische Monographien. Zoology. 17 entopterygoid pterygoid type 1 tendon bone origin 'entopterygoid' 'ectopterygoid' The bones which originate from cartilaginous arches exhibit chondral ossification, and those of dermal origin exhibit dermal ossification (that is, they do not include a car- tilaginous precursor). Ossification of the cartilaginous arches giving rise to the bones of the Suspensorium begins at the surface, they therefore exhibit perichondral ossification. In addition, bones such as the hyomandibula, symplectic, metapterygoid, and quadrate may have membranous outgrowths associated with the chondral portion. These membranous outgrowths are not preformed in cartilage; they are thin, delicate ossifications that ex- tend from the perichondral ossification. SUSPENSORIUM OF OSTARIOPHYSANS OTHER THAN CATFISHES Gonorynchiforms The series of Chanos chanos includes 13 specimens ranging from 11 to about 850 mm standard length. In 11— mm specimens, the mandibular and hyoid arches (Figs. 3, 4A) are car- tilaginous. The dorsal part of the mandibular arch, the palatoquadrate, is an elongate cartilage that overlaps the lateral face of the dorsal Umb of the hyoid arch. The palato- quadrate cartilage is continuous with the lower part of the mandibular arch, the Meckelian cartilage. The palatoquadrate broadens posteriorly and close to the. Mc hyo-sy : Suspensorium of the gonorynchiform Chanos chanos, lateral view ( mm specimen; SIO 80-199). hyo-sy: hyo-symplectic; mc: Meckelian cartilage; pqc: palatoquadrate; pr. Op: processus 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 original Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology
