By Fenton, Melville Brockett; Simmons, Nancy B
There are greater than 1,300 species of bats - or virtually 1 / 4 of the world's mammal species. yet earlier than you diminish in worry from those hairy "creatures of the night," give some thought to the bat's basic function in our atmosphere. A unmarried ten-gram bat could devour a number of thousand bugs in an evening. during the tropics and subtropics, fruit and nectar-feeding bats also are an important to the lives of vegetation, supplying both pollutants and seed dispersal. Bats: a global of technological know-how and secret offers those attention-grabbing nocturnal creatures in a brand new gentle. Lush, full-color photos painting bats in flight, feeding, and mating in perspectives that express them in remarkable element. The pictures additionally take the reader into the roosts of bats, from caves and mines to the tents a few bats make from leaves. A accomplished consultant to what scientists find out about the realm of bats, the ebook starts with a glance at bats' origins and evolution. It is going directly to handle a number of questions regarding flight, nutrition, habitat, replica, and social constitution: Why do a little bats dwell on my own and others in huge colonies? while do bats reproduce and take care of their younger? How has the power to fly - distinctive between mammals - inspired bats' mating habit? A bankruptcy on biosonar, or echolocation, takes readers in the course of the method of high-pitched calls bats emit to navigate and trap prey. greater than half the world's bat species are both in decline or already thought of endangered, and the booklet concludes with feedback for what we will be able to do to guard those species for destiny generations to learn from and luxuriate in. From the tiny "bumblebee bat"--The world's smallest mammal - to the large Golden-Crowned Flying Fox, whose wingspan exceeds 5 ft, Bats offers a breathtaking view of 1 of the world's such a lot interesting but least-understood species. -- from dirt jacket. Read more...
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Additional resources for Bats : a world of science and mystery
As of 2014, all fossils that can be definitively identified as “bat” come from rocks that are Eocene or younger. It is likely, however, that some fragmentary Paleocene fossils (bits and pieces of jaws and teeth) now sitting in museum drawers may eventually be identified as bats once more complete specimens are discovered. Depending on when they originated, the first bats would have lived in a world full of birds and perhaps other feathered dinosaurs. Pterosaurs, the earliest known vertebrates to have evolved powered flight, were extinct by the end of the Cretaceous period.
Like living insectivores such as shrews and moles, they probably had a relatively long muzzle with molar teeth that had sharp cusps and “W” shaped crests for efficient puncturing and slicing small, armored arthropod prey. Jaw fragments and fossil teeth showing these features are common in fossil collections around the world—indeed, they are frequently found in Late Cretaceous (~100 to 66 million years ago) and Paleocene (~66 to 56 million years ago) fossil sites. Perhaps paleontologists already have fossils of enigmatic “pre-bats” in their collections but haven’t yet recognized them for what they really are!
5 million years old. The rocks themselves are pale laminated mudstones that beautifully preserved the dark brown bones of vertebrates. Most of the fossils from the Green River Formation are fish—over a million specimens representing twenty-five species are known. Other animals, however, were sometimes fossilized, including bats, insects and other arthropods, salamanders, frogs, turtles, crocodiles, lizards, snakes, birds and early members of the carnivore and ungulate lineages. Paleontologists think that the climate in Wyoming at the time these animals lived was moist- temperate to subtropical—rather like Florida today.