During the Cenozoic ( Tertiary about 65 to 1. 6 million years ) folding, faulting and uplifting, accompanied by volcanic activity and intrusion of igneous rocks was related to major continental collision between the larger Arabian and Eurasian plates ( e. g. Robertson & Dixon, 1984 ).

During the Mesozoic and Cenozoic eras, the echinoids flourished.

During the Cenozoic Era, volcanic activity and extensive lava flows in the region dramatically changed the landscape.

During the Cenozoic Era the chalk was uplifted ( see Cenozoic Era ).

During the Cenozoic climatic cooling, the Antarctic Peninsula was the last region of Antarctica to have been fully glaciated according to current research.

During the Cenozoic era the chalk was uplifted as part of the Weald uplift which created the great Weald-Artois Anticline, caused by the same orogenic movements that created the Alps.

During the Quaternary Period of the Cenozoic Era, the area was characterized by volcanism, which formed the St. Elias Range.

During the Cenozoic, North America was periodically connected to Eurasia via Beringia, allowing multiple migrations back and forth to unite the faunas of the two continents.

During the Cenozoic Era, the Mediterranean region, Europe, and northwest Africa had a wetter climate and were largely covered by laurel forests.

During pregnancy in viviparous mammals, endogenous retroviruses ( ERVs ) are activated and produced in high quantities during the implantation of the embryo.

During the gradual process by which Homo erectus made a transition from furry to naked skin, their hair texture putatively changed gradually from Afro-textured hair or ' kinky ' ( i. e. tightly coiled ) to straight hair ( the condition of most mammals, including humanity's closest cousins — chimpanzees ) This argument is based on the principle that curly hair impedes the passage of UV light into the body relative to straight hair ( thus curly or coiled hair would be particularly advantageous for dark-skinned hominids living at the equator ).

During this period, mammals and birds continued to evolve into roughly modern forms, while other groups of life remained relatively unchanged.

During the Quaternary period, mammals, flowering plants, and insects dominated the land.

During the Miocene ( 23 to 5 Mya ), mammals were fairly modern.

During a bear's winter sleep state, the degree of metabolic depression is much less than that observed in smaller mammals and the bear's body temperature remains relatively stable ( depressed from to approximately ).

During the Paleocene, because of the small initial size of all mammals, apex predator niches were often occupied by members of other classes, such as terrestrial crocodilians ( e. g. Pristichampsus ), large snakes ( e. g. Titanoboa ), varanid lizards, or flightless birds ( e. g. Gastornis in Europe and North America, Paleopsilopterus in South America ).

During modern times, the polecat is still scantly represented in popular culture when compared to other rare British mammals, and misunderstandings of its behaviour still persist in some rural areas.

During his travels he studied the birds and mammals apart from studying the local culture.

During and after the Age of Discovery, European explorers, such as the Spanish conquistadors, encountered other groups of people who had never or only recently adopted agriculture, such as in the Pacific Islands, or lacked domesticated big mammals such as the people of the New Guinea Highlands.

During this period of isolation, unique mammals evolved to fill ecological niches similar to other mammals elsewhere.

During estrus ( in heat ) in mammals, the hormone estradiol ( a hormone of the class of hormones known as estrogens ) regulates this sexual receptivity behavior by the neurons in the ventromedial nucleus of the hypothalamus, the periaqueductal gray, and other areas of the brain.

During the Birnirk culture, sea mammals were hunted.

During the winter and in colder environments, though, fish consumption is significantly lower, and the otters use other sources of food, including birds, insects, frogs, crustaceans and sometimes small mammals, including young beavers.

During pregnancy in viviparous mammals ( all mammals except Monotremes ), endogenous retroviruses ( ERVs ) are activated and produced in high quantities during the implantation of the embryo.

During World War II, responding to the large number of nerve injuries sustained by soldiers in combat and by his pioneering work in comparative anatomy and the regrowth of damaged nerves in squids and octopuses, Young set up a unit at the University of Oxford to study nerve regeneration in mammals.

During their migration from their nest to the sea, hatchlings are preyed on by dipteran larvae, crabs, toads, lizards, snakes, seabirds such as frigatebirds and other assorted birds and mammals.

During the Edo period schools proliferated to number more than five hundred, and training techniques & equipment advanced.

During this same period, 1970 – 1980, shopping malls proliferated in the Philadelphia area and retail business in Mount Holly suffered.

During this time, Beccaria, with the brothers Pietro and Alessandro Verri and a number of other young men from the Milan aristocracy formed a literary society, which was named " L ' Accademia dei pugni " ( the Academy of Fists ), a playful name that made fun of the stuffy academies that proliferated in Italy and also because relaxed conversations that were taking place in there sometimed ending in affrays.

During this time, sponges, such as Actinocoelia meandrina, proliferated, only to be buried in lime mud and their internal silica needles ( spicules ) dissolved and recrystallized to form discontinuous layers of light-colored chert.

During the mid-1990s, businesses began to flourish once again in North Jersey, while cell phones and internet dial-up connections proliferated.

During the latter years of the 19th century, revolutionary groups of all flavors proliferated, some of which sought to reject modernity altogether and turn the clock back to the Middle Ages.

During this period, Kodama used his underworld connections to help unite the various gangs, which had greatly proliferated in the years immediately following World War II.

During the Renaissance, many artists were strongly influenced by classical Greek styles and culture, and images of nude and semi-nude subjects in many forms proliferated in art, sculpture and architecture of the period.

During the decade that followed, the common man, as that piece put it, grew uncomfortable as the Voice of God and fled from behind Saint Woodrow ( Wilson ) only to learn from Science, to his shocked relief that after all there was no God he had to speak for and that he was just an animal anyhow -- that there was a chemical formula for him, and that too much couldn't be expected of him.

During the next five years the leaders of the Fair Deal reluctantly backed down from the optimistic expectations of the New Deal.

And, he added: `` During the many months in prison camp, all abstract images vanished from my mind ''.

During the period from 1 July 1960 through 31 January 1961, additional research affiliations were effected with the U. S. Army Medical Research and Development Command to conduct research in procedures for quantitative electron microscopy, and for the study of biophysical and biological studies of the structure and function of ocular tissue.

During the period from 1 July 1960 through 31 January 1961, the Medical Museum was required to move to Temporary Building `` S '' on the Mall from Chase Hall.

During the war it was in constant use by the wagon trains transporting supplies from the railhead at Grafton to the troops operating in the interior.

During a round of target practice the sun comes from behind a cloud and dazzles the marksman, lowering his chance of a bull's-eye.

During the two weeks when the algae disappeared from the effluent BOD's in the effluent were 18 and 16 Aj.

During the rinsing operation the volume in the tubs gradually increases until overflow from the main drain begins.

During the second week of operations, Fogg received a telegram from the Post Office Department, asking him to `` put on two airplanes and make two flights daily, plus one Sunday trip ''.

During the trip Selkirk decided that the route through Illinois territory to Indiana and the eastern United States was the best route for goods from England to reach Red River and that the United States was a better source of supply for many goods than either Canada or England.

During the quarrel I learned what the trouble was, from the accusations each hurled at the other.

During the years when Israel was passing from crisis to crisis -- the Sinai campaign, the infusion of multitudes of penniless immigrants -- it was felt that the purpose of national unity could be best served if the secular majority were to yield to the religious parties.

During about three and a half months of the year, in the summer, there are three boats that run from the mainland to the Island carrying passengers, food, and cars ; ;

During the first half of October the Blue Ridge and other parts of the Appalachians provide a spectacle stretching from Maryland and West Virginia to Georgia.

During World War 2,, doctors in The Netherlands and Scandinavia noted a curious fact: despite the stresses of Nazi occupation, the death rate from coronary artery disease was slowly dropping.

During his raid on Washington, D. C. in 1864, Lincoln was watching the combat from an exposed position ; Captain Oliver Wendell Holmes shouted at him, " Get down, you damn fool, before you get shot!

During the 1970s and 1990s, there was an epistemological shift away from the positivist traditions that had largely informed the discipline.

During this sequence, it is revealed that Mrs. Alexander died from the injuries inflicted during the gang-rape, and her husband has decided to continue living " where her fragrant memory persists " despite the horrid memories.

During Christie and Mallowan's time in the Middle East, along with their time spent among the many tombs, temples, and museums, there was also a large amount of time spent traveling to and from Mallowan's sites.

During their journey from the shipapu to the world of the living, the spirits stop along the road and eat the food left for them by the living.

) During these years, Armenia occupied some 20 % of Azerbaijan's territory, rendering possibility of supplies from Azerbaijan an impossibility.

During the first 11 months of 2006, net imports grew by 21 percent to $ 1. 95 billion, while exports stood at $ 895 million, up 0. 3 percent from the same period in 2005.