| 单词 | Tunicata |
| 例句 | Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Tunicata, a group of marine animals clad with a leathery tunic, 14. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z In Amphioxus and the Tunicata the early development of the central nervous system is very much like that of the Vertebrata, but the later stages are simpler, being without the cranial flexure. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z In zoology the term is applied to the large chamber or 'cloaca' into which the intestine opens in the Tunicata. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis The thyroid appears in fishes, and Gegenbaur believes that it may have been a useful organ to the Tunicata in their former state of existence. Man And His Ancestor A Study In Evolution The lower division of the Mollusca, comprising the Polyzoa, Tunicata, and Brachiopoda. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science "What were you about to say concerning the Tunicata order of mollusca, sir philosopher?" Mardi: and A Voyage Thither, Vol. II The Tunicata are remarkable for the fact that the nervous system, though at first hollow, becomes quite solid in the adult. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Under this head he placed five classes, including the Infusoria, Polyps, Star-Fishes, Sea-Urchins, Tunicata, and Worms,—thus bringing together indiscriminately Radiates, Mollusks, and Articulates. The Atlantic Monthly, Volume 09, No. 53, March, 1862 The Tunicata, or sea squirts, are animals which have become simple through degeneration, due to the adoption of a sedentary life, the withdrawal from the crowd of animals and from the struggle which it necessitates. Composition-Rhetoric The shell of Mollusca, which are for this reason sometimes called "Testacea;" also, the calcareous case of Echinoderms; also, the thick leathery outer tunic in the Tunicata. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science |
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