Akazawa, "Cranial ontogeny in Neandertal children: evidence from neurocranium
, face and mandible," in Current Trends in Dental Morphology Research, E.
The literature on the macroanatomical features of the skeletal system in African giant rat exists with work on some aspects of the osteometry and morphology of the neurocranium
, pelvic limb , and forelimbs , but features of the vertebrae, ribs, and sternum remain unstudied in the African giant rats.
is not depressed; the vomeral tooth row is restricted to a small crest and the parasphenoid is straight in sagittal profile and thin.
It separates the neurocranium
from the cervical spine, deep neck spaces and facial viscerocranium (i.e.
3); one pair of slender uroneurals; three epurals; a free parhypural; three thin supraneurals, generally straight; two supernumerary spines on first dorsal pterygiophore; no procumbent spines (spurs); thin Y-shaped basisphenoid, free from parasphenoid and prootics; neurocranium
with frontal tabs similar to Vincentia Castelnau, 1872 (Fraser 1972: pl 31); supramaxilla absent; posttemporal smooth or with 1-3 small serrae on posterior margin; preopercle with 2-3 small, widely spaced serrae near angle, ridge smooth; infraorbitals smooth; infraorbital shelf present on third bone; ring of scleral cartilage, no ossification present; 7 branchiostegals; ceratohyal notched, suture smooth with epihyal; urohyal with short anterior process.
.--Because the neurocranium
is badly crushed dorso-ventrally, only the presence or absence of its bony constituents is noted.
Previous examinations of the material from northern Quebec and Newfoundland have indicated that the Dorset people were physically comparable to the Thule culture Inuit, characterized primarily by a large robust neurocranium
, dolichocephaly, and marked cheekbones (Anderson and Tuck, 1974; Utermohle, 1984).
Analysis of cartilage in these embryos suggests that RA differentially affects the patterning of subpopulations of neural crest cells and the formation of specific cartilage elements, resulting in very different patterns of deletions in the neurocranium
and the pharyngeal skeleton.
Transient expression of collagen type II at epitheliomesenchymal interfaces during morphogenesis of the cartilaginous neurocranium
Morphological analyses of the neurocranium
of a group of rock-dwelling cichlid fishes (Cichlidae: Perciformes) from Lake Malawi, Africa.
Cranial thickness measurements were taken from ten sites on the neurocranium
of each individual (Fig.
, trabeculae cartilage and ethmoid cartilage formed at this stage (Fig.