Translations:Adventist Youth Honors Answer Book/Nature/Fossils/18/en
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| Phanerozoic eon | ||
|---|---|---|
| Paleozoic era | Mesozoic era | Cenozoic era |
- p. Mesozoic
- Lying between the Paleozoic and the Cenozoic, Mesozoic means 'middle animals'. It is often called the 'Age of the Dinosaurs'.
- q. Cenozoic
- The Cenozoic Era is the latest of three geologic eras of the Phanerozoic eon. Evolutionary geologists define this era as having started about 65 million years ago, when the age of the dinosaurs ended.
- r. Pleistocene
- The Pleistocene epoch on the evolutionary geologic timescale is the period from 1,808,000 to 11,550 years before present. The Pleistocene epoch had been intended to cover the world's recent period of repeated glaciations, or the Ice Age.
- s. Paleobotany
- Paleobotany is the branch of paleontology or paleobiology dealing with the recovery and identification of plant remains from geological contexts, and their use for the biological reconstruction of past environments. Paleobotany includes the study of terrestrial plant fossils, as well as the study of prehistoric marine photoautotrophs, such as photosynthetic algae, seaweeds or kelp.
- t. Pelecypod
- Pelecypod are molluscs belonging to the class Bivalvia. They typically have two-part shells, with both valves being symmetrical along the hinge line. The class has 30,000 species, including scallops, clams, oysters and mussels.
- u. Brachiopod
- Brachiopods are two-shelled marine animals with an external morphology superficially resembling pelecypods (for instance, clams) of phylum Mollusca to which they are not closely related. It is estimated by paleobiologists that 99 percent of all documented lamp-shell species are both fossils and extinct.
