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  2. Dermal bone - Wikipedia

    en.wikipedia.org/wiki/Dermal_bone

    A dermal bone or investing bone or membrane bone is a bony structure derived from intramembranous ossification forming components of the vertebrate skeleton, including much of the skull, jaws, gill covers, shoulder girdle, fin rays (lepidotrichia), and the shells of turtles and armadillos.

  3. Osteoderm - Wikipedia

    en.wikipedia.org/wiki/Osteoderm

    The calcium and magnesium in the dermal bone will release alkaline ions into the bloodstream, acting as a buffer against acidification of the body fluids. [8]

  4. Skull roof - Wikipedia

    en.wikipedia.org/wiki/Skull_roof

    The bones are derived from dermal bone and are part of the dermatocranium. In comparative anatomy , the term is applied to the whole dermatocranium. [ 1 ] In general anatomy, the roofing bones may refer specifically to the bones that form above and alongside the brain and neurocranium (i.e., excluding the marginal upper jaw bones such as the ...

  5. Interparietal bone - Wikipedia

    en.wikipedia.org/wiki/Interparietal_bone

    Inca bones in humans were first found in the skulls of contemporary indigenous peoples of the southern Andes as well as in those of mummies of the Inca civilization. Although the Inca bone was originally encountered as a variation in South American and Latin American cranial remains, the variation occurs in people from all geographic regions of ...

  6. Facial skeleton - Wikipedia

    en.wikipedia.org/wiki/Facial_skeleton

    The facial skeleton comprises the facial bones that may attach to build a portion of the skull. [1] The remainder of the skull is the neurocranium.. In human anatomy and development, the facial skeleton is sometimes called the membranous viscerocranium, which comprises the mandible and dermatocranial elements that are not part of the braincase.

  7. Osteoderm development - Wikipedia

    en.wikipedia.org/wiki/Osteoderm_development

    Osteoderms are dermal bone structures that support the upper layer of skin and serve as protection against the elements in a large variety of extinct and extant organisms, especially reptiles. [1] This structure is commonly called "dermal armor" and serves to protect the organism, while also helping with temperature regulation.

  8. Ostracoderm - Wikipedia

    en.wikipedia.org/wiki/Ostracoderm

    Many had hypocercal tails in order to generate lift to increase ease of movement through the water for their armoured bodies, which were covered in dermal bone. They also had sucking mouth parts and some species may have lived in fresh water. The taxon contains the subgroups Heterostraci, Astraspida, Arandaspida. † Thelodonti (extinct)

  9. Dermatocranium - Wikipedia

    en.wikipedia.org/wiki/Dermatocranium

    The dermatocranium is the portion of the cranium that is composed of dermal bone, as opposed to the endocranium and splanchnocranium, which are composed of endochondral bone. The dermatocranium comprises the skull roof, the facial skeleton (usually excluding the dentary), and—in fishes—the opercular bones. [1]