3. What undoubtedly stimulated great evolutionary changes in vertebrate history was the emergence of the first amniote... 4. : The asexual reproduction in the blood of the vertebrate host has been described but the cycle in the tick is practically unknown. 75 sentence examples: 1.

2. They occur in vertebrate animals throughout the globe, though varying in abundance in different districts and at different times.

This remarkable condition has no parallel among other vertebrate animals.

All vertebrate animals, all insects and some other large groups of animals, pair for each birth.
3. The adults live in great numbers in the alimentary canal of some Latreille,2 rightly estimating the value of these differences, though he was not an original worker in the field of These pits are not isolated, but are connected by an ectodermal ridge, which grows in at the margin of the mantle and forms a continuous band somewhat resembling the ectodermal primordium of This division of the Vertebrata into hot and cold blooded is a curiously retrograde step, only intelligible when we reflect that the excellent entomologist had no real comprehension of The great problems involved in the study of geographical distribution must therefore be based mainly upon the other classes, both The leading idea of Cuvier, his four embranchemens, was confirmed by the Russo-German naturalist Von Baer (1792-1876), who adopted Cuvier's divisions, speaking of them as the peripheric, the longitudinal, the massive, and the I thought I might just as well describe my pet in order to know it--order, 21), so that its fibres join the anterior faces of the nerve-end cells as in It has been calculated that about 595 different species of 34, and in the constitution of its digestive, vascular, respiratory (branchial), excretory, skeletal, nervous and muscular systems it exhibits what appears to be a primordial condition of A new edition of it appeared in 1843 under the title of Lehrbuch der Zootomie, of which only the Some of the species of Aviculariidae also appear to be warningly coloured with black or black and red, and their coloration is associated with the urticating nature of their bristles, which makes them highly unpalatable to This line of hypothesis and demonstration is typical of the palaeogeographic methods generally - namely, that No food passes into the hepatic caecum, which has been definitely shown on embryological and physiological grounds to be the simplest persistent form of the Probably most forms possess a resting, attached phase at some period or other, in the inconfined to the land, but had to do also with those littoral meadows where inIn other words, the origin, or first appearance of new characters, which is the essence of evolution, is an orderly process so far as the indifferent, male or female, can be recognized in many cases, often in the In dealing with disease-causing forms, the more narrowly the original source of the parasite concerned is defined, the closer do we get to the true Beside the expansion of types which abounded in the Cambrian, Finally, the Tylopoda differ not only from other ungulates, but from all other mammals, in the fact that the red corpuscles of the blood, instead of being circular in outline, are oval as in the inferior is said to produce fully developed gonads, and if kept in aquaria with Tubifex, the number of infected worms steadily increases, a fact pointing to the whole cycle being passed through, without the intermediation of a Curiously enough, however, they differ from the cephalic Molluscan eye in the fact that, as in the It appears from comparison of the work in the two great divisions of TRYPANOSOMES, Or Haemoflagellates, minute Protozoan parasites, characterized by the possession of one or two flagella and an undulating membrane, and specially adapted for life in the blood of a I I) and Necrophaga are valuable scavengers from their habit of burying small Huxley questioned the time value of fossils, but recent research has tended to show that identity of species and of mutations is, on the whole, a guide to synchroneity, though the general range of Actin Filaments At least six different types of actin are synthesized by Like St Helena, the island does not possess any indigenous For a longer or shorter period of their lives ticks are parasitic upon As regards existing forms of life, the limitations of the class are perfectly well defined and easy of recognition; for although certain groups (not, by the way, whales, which, although excluded in popular estimation from the class, are in all essential respects typical mammals) are exceedingly aberrant, and present structural features connecting them with the lower Considered collectively, mammals, which did not make their appearance on the earth for some time after reptiles had existed, are certainly the highest group of the whole The Phoronidea (q.v.) vertebras. vertebro. 100 examples: Studies on plants, invertebrates, lower vertebrates, mammals and humans at the…

The anterior and posterior limbs in all the higher vertebrate classes are plainly homologous.

Because it is a vertebrate, the fish a backbone that must be removed before being eaten. The invertebrate chordate pharyngeal endostyle is the homolog of the vertebrate thyroid gland. an animal of any species that has a backbone or spinal columnBecause it is a vertebrate, the fish a backbone that must be removed before being eaten. are now associated with Hemichordata (q.v.)

2. Vertebrate host, Athene noctua, Little Owl; in vertebrate host, Culex pipiens. ), growing forwards in the septum between the proboscis-cavity and the collar-cavities, and supported dorsally by the median mesentery of the collar, is the representative of the so-called notochord or stomochord of Balanoglossus; and if the view that this organ is really a notochord is well founded, it may be regarded as the homologue of the anterior end of the The Nematode parasites of the Invertebrata are usually immature forms which attain their full development in the body of some After comparing the salamanders and the perenni-branchiate Urodela with the tadpoles and the frogs, and enunciating the law that the more highly any animal is organized the more quickly does it pass through the lower stages, Meckel goes on to say: " From these lowest Vertebrata to the highest, and to the highest forms among these, the comparison between the embryonic conditions of the higher animals and the adult states of the lower can be more completely and thoroughly instituted than if the survey is extended to the Invertebrata, inasmuch as the latter are in many respects constructed upon an altogether too dissimilar type; indeed they often differ from one another far more than the lowest Finally, he saw the spores accumulate within the cells of the salivary glands, and discovered that they actually passed down the salivary ducts and along the grooved hypopharynx into the seat of puncture, thus causing infection in a fresh In 1835 Mr Jenyns (afterwards Blomefield) produced as excellent Manual of British All the members of this order are parasitic on aquatic a X yew), the fluid secreted by the mammary glands of the division of Main research interests: Plio-Pleistocene fossil assemblages and faunal analysis, The jaguar 's major prey includes tapirs, deer, monkeys, and capybara, but it will eat almost any These measures have proved extremely interesting in their applications to analyzing the evolution of the The word usage examples above have been gathered from various sources to reflect current and historial usage.

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