英语词汇“dermal bone”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

dermal bone n. Zoology a bone that does not have a cartilaginous precursor and is formed by differentiation of dermal mesenchyme cells into osteoblasts; spec. one which is connected with the ectodermal basement membrane by dentine or enamel, or which is homologous with such a bone.

ΚΠ

1833 G. A. Mantell Geol. South-east of Eng. 327 There cannot exist a doubt that these are dermal bones to which the scales of the animal were attached.

1902 Proc. Zool. Soc. 1 208 Exquisite examples of true dermal bones are those ossifications ‘within the skin’ which in Amphibia and Reptiles are now generally called osteoderms.

1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) viii. 242 The anterior part of the palatal complex is an essentially horizontal plate of dermal bone.

2002 Paleobiology 28 475/2 The dermal and oral skeleton, which is composed of the teeth, scales, fin spines, and dermal bones of vertebrates, particularly lower vertebrates, is primitively the most extensive.

单词	dermal bone
释义	> as lemmas dermal bone dermal bone n. Zoology a bone that does not have a cartilaginous precursor and is formed by differentiation of dermal mesenchyme cells into osteoblasts; spec. one which is connected with the ectodermal basement membrane by dentine or enamel, or which is homologous with such a bone. ΚΠ 1833 G. A. Mantell Geol. South-east of Eng. 327 There cannot exist a doubt that these are dermal bones to which the scales of the animal were attached. 1902 Proc. Zool. Soc. 1 208 Exquisite examples of true dermal bones are those ossifications ‘within the skin’ which in Amphibia and Reptiles are now generally called osteoderms. 1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) viii. 242 The anterior part of the palatal complex is an essentially horizontal plate of dermal bone. 2002 Paleobiology 28 475/2 The dermal and oral skeleton, which is composed of the teeth, scales, fin spines, and dermal bones of vertebrates, particularly lower vertebrates, is primitively the most extensive. extracted from dermaladj. < as lemmas
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> as lemmas