英文.... | A class of very ancient vertebrates including sharks, rays, skates, and chimaeras, that are characterized by having a cartilaginous skeleton, and typically a notochord present in the young that is gradually replaced by cartilage, a relatively large brain weight relative to body size, red blood cells produced in the spleen and special tissue around the gonads rather than in bone marrow, unique Leydig's organ and epigonal organ that may be part of the immune system, tough skin covered with dermal teeth, five to seven gills, internal fertilization, having young produced by either live birth (ovoviviparous species) or through eggs (oviparous) depending upon the species, and by being primarily ectothermic or cold blooded. Many of the living sharks and rays are assigned to the same genera as species that swam the Cretaceous seas over 100,000,000 years ago. |
軟骨魚綱(綱)............ | [AS-Academia Sinica] |
................. | 國家教育研究院-雙語詞彙、學術名詞暨辭書資訊網 August 25, 2011 |
................. | 智慧藏百科全書網 August 25, 2011 |
................. | 大英百科全書線上繁體中文版 August 25, 2011 |
................. | 脊椎動物學(上) 67 |
................. | 基礎生命科學 475 |
Chondrichthyes(class)............ | [VP] |
................. | Collier's Encyclopedia (1950) 2:253 |
................. | CDMARC Subjects: LCSH (1988-) |
................. | Webster's Third New International Dictionary (1961) |
................. | Animal Diversity Web (1995-) |
................. | Taxonomicon: Systema Naturae (1989-2005) |
................. | Encyclopedia Britannica Online (2002-) "chondrichthian," accessed 16 May 2006 |
cartilaginous fish............ | [VP] |
................. | Thesaurus of Park, Recreation, and Leisure Service Terms (1990) |
................. | Webster's Third New International Dictionary (1961) |
................. | Encyclopedia Britannica Online (2002-) |
cartilaginous fishes............ | [VP] |
................. | CDMARC Subjects: LCSH (1988-) |
................. | Oxford English Dictionary (1989) |
................. | Judge and Toyne, Oxford Illustrated Encyclopedia (1985) Vol. 2, taxonomy on endpapers |
................. | Encyclopedia Britannica Online (2002-) |
chondrichthians............ | [VP] |
................. | Random House Unabridged Dictionary (1993) |
................. | Encyclopedia Britannica Online (2002-) "chondrichthian," accessed 16 May 2006 |
chondrichthian............ | [VP] |
................. | Encyclopedia Britannica Online (2002-) "chondrichthian," accessed 16 May 2006 |
Subject:............ | [VP] |
................. | Animal Diversity Web (1995-) |
................. | Encyclopedia Britannica Online (2002-) "chondrichthian," accessed 16 May 2006 |