作者: 里程碑 時(shí)間: 2025-3-21 23:50 作者: Frequency-Range 時(shí)間: 2025-3-22 02:56 作者: 具體 時(shí)間: 2025-3-22 06:08 作者: Modicum 時(shí)間: 2025-3-22 09:27 作者: 墻壁 時(shí)間: 2025-3-22 13:05
Esteban Boltovskoy,Ramil Wright lead to the isolation of previously united biotic communities. During the 19th century paleontologists and biogeographers recognized that changing connections of this type could account for similarities and dissimilarities in the geological record for life on all of the known continents. In particu作者: 偏見 時(shí)間: 2025-3-22 17:14
Esteban Boltovskoy,Ramil Wright have been ancestral to the platyrrhine primates (Sarich, 1970; Hoffstetter, 1972, 1974; Lavocat, 1974; Cronin and Sarich, 1975). Indeed, recent geological evidence (see Tarling, this volume) indicates that an immigration of primates into South America from Africa would be quite as feasible during t作者: 生命 時(shí)間: 2025-3-22 21:33 作者: watertight, 時(shí)間: 2025-3-23 02:26 作者: 熱烈的歡迎 時(shí)間: 2025-3-23 08:12
Esteban Boltovskoy,Ramil Wright lead to the isolation of previously united biotic communities. During the 19th century paleontologists and biogeographers recognized that changing connections of this type could account for similarities and dissimilarities in the geological record for life on all of the known continents. In particu作者: seruting 時(shí)間: 2025-3-23 11:11
Taxonomic Determination,rous specimens; (c) the phenomenon of polymorphism as a function of ontogeny; e.g. . and Pyrgo; the juvenile forms of . rugosa described as ., etc; (d) the large number of phenotypically plastic species; (e) the post-mortem diagenetic effects including differential solution, recrystallization and deformation.作者: 問到了燒瓶 時(shí)間: 2025-3-23 15:29
The Living Organism, For example, the food particles as well as food residue occupy the last chambers forming a ‘vegetative segment’; the earlier chambers contain the nuclei and other inclusions and constitute the ‘chromatic segment’. The endoplasm of the single chambered forms is more or less homogenous with uniformly作者: 樸素 時(shí)間: 2025-3-23 18:57
The Test,many years fossil foraminifera were the main subject of foraminiferal study, and consequently the only part of the foraminifer that was studied was the test. For a long time the study of living forms was also concentrated only on the test, even though protoplasmic material was available for study. B作者: Ceremony 時(shí)間: 2025-3-24 00:27
Benthonic Foraminifera of Brackish, Hypersaline, Ultrasaline, and Fresh Waters,e and brackish water areas is different. As a general rule, it is difficult for a marine fauna to penetrate into fresh waters and .. Even when there are available migration routes, faunal mixing is impaired by salinity barriers. For thousands of years water from the Mediterranean Sea (salinity 37‰) 作者: Synovial-Fluid 時(shí)間: 2025-3-24 05:59
Benthonic Foraminifera of Marshes, Mangrove Swamps and Lagoons,y. The basic source of the water in these areas is the tide or storms although some water is of terrestrial origin, both surface and subsurface. The most characteristic trait of marshes is the active vegetative growth occurring on them. The salinity is commonly lower than normal marine values, usual作者: indemnify 時(shí)間: 2025-3-24 07:21 作者: persistence 時(shí)間: 2025-3-24 11:39 作者: 做事過頭 時(shí)間: 2025-3-24 15:05 作者: FLIT 時(shí)間: 2025-3-24 22:43
Preparation of Samples,nktonic components (for planktonic samples). This process may involve several steps. In the case of consolidated sediments, the sample must be disaggregated, washed and the foraminiferal components separated from the sediment. For those unconsolidated samples taken directly from the ocean bottom the作者: Stagger 時(shí)間: 2025-3-24 23:43 作者: antenna 時(shí)間: 2025-3-25 07:12
Faunal Studies and Their Application,bsequent quantitative study can be made. The data from these observations can be utilized in analysis of present ecological and oceanographic conditions. These data may also provide tools for the understanding of paleoecologic and paleooceanographic conditions. In this chapter several types of fauna作者: 浪蕩子 時(shí)間: 2025-3-25 07:30 作者: FOLD 時(shí)間: 2025-3-25 15:33
Storage of Samples and Specimens,boratory collections allow effective comparisons based on real specimens rather than on drawings or written descriptions. Taking all this into account it is not an exaggeration to say that a well maintained foraminiferal collection is of international value. Consequently, it is necessary to devote s作者: GENUS 時(shí)間: 2025-3-25 19:24 作者: overreach 時(shí)間: 2025-3-25 21:58
The Living Organism, distributed inclusions. Prior to reproduction, specifically sexual reproduction, the entire endoplasm often undergoes a process of ‘purification’ in which all the waste material and pigments are expelled beyond the test and the endoplasm becomes white and translucent.作者: Deduct 時(shí)間: 2025-3-26 00:43
Benthonic Foraminifera of Brackish, Hypersaline, Ultrasaline, and Fresh Waters,has mixed with water from the Black Sea (salinity 19‰) and yet the great majority of the marine organisms common to the Mediterranean have been unable to adapt to life in the Black Sea and are completely absent there.作者: 規(guī)范要多 時(shí)間: 2025-3-26 08:00 作者: Anhydrous 時(shí)間: 2025-3-26 08:53 作者: MUT 時(shí)間: 2025-3-26 13:11
Synonymy and Illustration, of such lists. Synonyms abound and some species have such widely different interpretations that the appearance of a species name in a list often conveys little information to the reader. Only by giving careful consideration to the systematic portion of the work and to the illustrations can the author meet his responsibilities to the reader.作者: 使無效 時(shí)間: 2025-3-26 18:12
The Test,e test. For a long time the study of living forms was also concentrated only on the test, even though protoplasmic material was available for study. Because of this history our knowledge of the test is much greater than that of the protoplasm.作者: 保存 時(shí)間: 2025-3-26 22:18 作者: AUGER 時(shí)間: 2025-3-27 02:12
Collection of Material,ists who study the living foraminifera of some region draw their taxonomic conclusions on the basis of the test rather than on the soft parts of the organism. The paleontologist draws his conclusions from the same information.作者: 包庇 時(shí)間: 2025-3-27 09:06
Preparation of Samples,egated, washed and the foraminiferal components separated from the sediment. For those unconsolidated samples taken directly from the ocean bottom the disaggregation process is eliminated but a new step, coloration, is added between washing and separation. To separate planktonic specimens from a plankton net sample requires special procedures.作者: 開花期女 時(shí)間: 2025-3-27 13:12 作者: 種子 時(shí)間: 2025-3-27 16:25
populations. A transient, unstable population should be under- stood as a fast episodic phase in a population subjected to genetic and environmental factors that tend to disrupt its cohesive, balanced genome architecure, thus enhancing its probability to produce a new species. Striking the core of D作者: Emmenagogue 時(shí)間: 2025-3-27 21:16 作者: 背叛者 時(shí)間: 2025-3-27 22:21
Esteban Boltovskoy,Ramil Wright unstable populations. A transient, unstable population should be under- stood as a fast episodic phase in a population subjected to genetic and environmental factors that tend to disrupt its cohesive, balanced genome architecure, thus enhancing its probability to produce a new species. Striking the作者: needle 時(shí)間: 2025-3-28 05:48 作者: MEET 時(shí)間: 2025-3-28 06:33
Esteban Boltovskoy,Ramil Wrighthe last 100 years or so. While Darwin’s observations (1859) led him to an understanding of the importance of geographical isolation to the geological record of evolution, he considered that vertical motions of land masses were much more critical in creating this condition than horizontal translation作者: 骯臟 時(shí)間: 2025-3-28 10:25 作者: MOAT 時(shí)間: 2025-3-28 15:14 作者: CANON 時(shí)間: 2025-3-28 19:17
Esteban Boltovskoy,Ramil Wrightd sloth ., later described by Cuvier (1796, 1812), was unearthed and sent to Spain by the Dominican Manuel Torres. Strange new Pleistocene discoveries continued to be made throughout the 19th Century (see, for instance, Darwin, 1839; Lund, 1841; Owen, 1842). Toward the end of the 1800’s the Tertiary作者: 勤勞 時(shí)間: 2025-3-29 01:48 作者: canonical 時(shí)間: 2025-3-29 04:38
978-90-481-8510-8Springer Science+Business Media B.V. 1976作者: inchoate 時(shí)間: 2025-3-29 11:04 作者: climax 時(shí)間: 2025-3-29 13:30 作者: 吞沒 時(shí)間: 2025-3-29 17:52
https://doi.org/10.1007/978-94-017-2860-7Mangrove; ecology; fauna; plankton作者: 祖?zhèn)髫?cái)產(chǎn) 時(shí)間: 2025-3-29 21:47
Storage of Samples and Specimens,boratory collections allow effective comparisons based on real specimens rather than on drawings or written descriptions. Taking all this into account it is not an exaggeration to say that a well maintained foraminiferal collection is of international value. Consequently, it is necessary to devote serious attention to its organization.作者: 皺痕 時(shí)間: 2025-3-30 01:58
The Systematic Position and Importance of the Foraminifera,The foraminifera are members of the Order Foraminiferida, Subclass Rhizopoda, Class Sarcodina, Phylum Protozoa. They constitute about 2.5% of all animals known from the Cambrian to the Recent.作者: MOT 時(shí)間: 2025-3-30 06:15
Benthonic Foraminifera of Normal Marine Waters,Benthonic foraminifera are those that live on the sea bottom. Taxonomically they are much more diverse than the planktonic foraminifera but the number of individuals per species is less among the benthonic forms.作者: 向下五度才偏 時(shí)間: 2025-3-30 08:45
Planktonic Foraminifera,Plankton are the organisms that float in the sea. In general they lack self-locomotion (foraminifera, radiolaria, diatoms, etc.) or are very slightly mobile (dinoflagellates, copepods, etc.). Their principal means of transport, at least in the horizontal direction, is the oceanic current system.作者: 笨重 時(shí)間: 2025-3-30 14:04 作者: 遠(yuǎn)足 時(shí)間: 2025-3-30 20:01
Unresolved Problems,The study of foraminifera has produced a vast set of unanswered questions. The enumeration of all the problems that require solution would use too much space; however, an abbreviated list of some fundamental problems is in order.作者: 手工藝品 時(shí)間: 2025-3-30 22:48 作者: 建筑師 時(shí)間: 2025-3-31 03:02 作者: BROTH 時(shí)間: 2025-3-31 09:00
Klaus Kiefcentury, Albania passed under Turkish suzerainty and thus remained-nominally or actually according to the locality and period— until 1912. The independence of Albania was proclaimed at Ylone (Valona) on 28 November, 1912, and on 17 December, 1912, the London conference of ambassadors agreed to the p作者: homeostasis 時(shí)間: 2025-3-31 09:27
SpringerBriefs in Computer Sciencehttp://image.papertrans.cn/n/image/640862.jpg
