chimaera


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chimaera

(kĭmēr`ə), cartilaginous marine fish, related to the sharks. Also called ratfishes, chimaeras are found in temperate oceans throughout the world, mostly in deep water. They have large heads, long, thin, ratlike tails, and large, fanlike pectoral fins. In many species there is a poison spine in front of the first dorsal fin. Their slippery skins are black, gray, or silver, often with stripes or spots. The largest reach a length of about 6 1-2 ft (2 m). Chimaeras resemble sharks in certain fundamental respects: They have cartilage skeletons, males have claspers for internal fertilization of females, and females lay eggs encased in leathery cases. However, they resemble the bony fishes in having the upper jaw fused to the skull, the gill slits opening into a single chamber, a bony covering, or operculum, over the gill slits, and separate anal and urogenital openings. A distinctive feature of chimaeras is the presence of extra claspers in the male, one in front of each pelvic fin and a prominent one on the forehead. The function of these appendages is not known, but they are thought to play a role in courtship. Chimaeras form the subclass Holocephali of the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Chondrichthyes.

chimera

, chimaera
1. Greek myth a fire-breathing monster with the head of a lion, body of a goat, and tail of a serpent
2. a fabulous beast made up of parts taken from various animals
3. Biology an organism, esp a cultivated plant, consisting of at least two genetically different kinds of tissue as a result of mutation, grafting, etc.
References in periodicals archive ?
chimaera outbreak in the United Kingdom, which included national case finding, aerobiological investigations, environmental sampling, and phylogenetic analysis (2).
The researchers found that sharks, rays and chimaeras face a substantially higher risk of extinction than do most other animals.
He Chimaera would "eat up people and animals alive, and cook them afterwards in the burning oven of its stomach"; but the monster would also be vanquished by Bellerophon's "thrust [of] his sword" into the "cruel heart" of the Chimaera, hurtling him "from that vast height, downward; while the fire within its bosom, instead of being put out, burned fiercer than ever and quickly began to consume the dead carcass" (7: 150, 165).
ANZ had planned to invest about AUD55m in Chimaera Financial Group.
The backdrop to the STC's enquiry was the proposal by the Government that the creation of human--animal chimaera and hybrid embryos for research purposes be prohibited for the time being, notwithstanding that any new law should contain a power enabling regulations to set out circumstances in which the creation of hybrid and chimaera embryos may be allowed under licence in the future.
73; ct "Objectum ergo intellectus sunt Deus, creaturae, universalia, singularia, res spirituales, materiales, entia, non entia, substantia, accidens, entia realia, et rationis: quando enim dicimus, Chimaera est ens rationis; hippocervus est impossibilis, aut aliquid huiusmodi, objectum aliquod apprehendimus, de quo hoc affirmamus, sed illud objectum non est quid reale et possibile, tunc enim actus esset falsus, ergo concipimus aliquid impossibile; ergo res etiam impossibiles sunt objectum nostri intellectus.
Accordingly, Plato had him announce that "I don't altogether envy the man who devotes himself to this sort of [interpretive] work, if only because, when he has [for example] finished with Oreithyia, he must then go on to put the Hippocentaurs into proper shape and, after them, the Chimaera.
In our surrender to the poet, we may also take on his power and ride the horse bareback, but in our encounter with the composite Chimaera, do we end up killing it or coming to terms with it?
Then the king reads the [Mathematical Expression Omitted] which ha been innocently shown him by Bellerophon and devises four ways of disposing of his guest, in battles with the Chimaera,(34) the Solymoi (indigenous inhabitants of Lycia), and Amazons, and finally resorts to a murderous ambush (186-9).