Fossil collecting

Fossil collecting (some times, in a non-scientific sense, fossil hunting) is the collection of fossils for scientific study, hobby, or profit. Fossil collecting, as practiced by amateurs, is the predecessor of modern paleontology and many still collect fossils and study fossils as amateurs. Professionals and amateurs alike collect fossils for their scientific value. A commercial trade in fossils has also long existed, with some of this being practised illegally.

Process

Locating fossils

Rock type

Fossils are generally found in sedimentary rock with differentiated strata representing a succession of deposited material. The occurrence of fossil bearing material depends on environmental factors before and after the time of preservation. After death, the first preserving factor is a rapid burial in water bodies or terrestrial sediment which would help in preserving the specimen. These rocks types are usually termed clastic rock, and are further subdivided into fine, medium and coarse grained material. While fossils can be found in all grain types, more detailed specimens are found in the fine grained material. A second type of burial is the non-clastic rock, form where the rock is made up of the precipitation of compacted fossil material, types of rock include limestone and coal. The third fossil bearing material is the evaporates, which precipitate out of concentrated dissolved salts to form nodular deposits, examples include rock salt and phosphate concentrations. The evaporates are usually associated with gastropod, algae, vertebrate, and trace fossils. Fossils are not to be found in areas of igneous rock (except in some beds between lava flows). In rocks which have undergone metamorphism, fossils are generally so distorted that they are difficult to recognize or have been destroyed completely.

Fossil Hunter

Fossil Hunter is a novel written by Canadian science fiction author Robert J. Sawyer. The sequel to Far-Seer, it is the second book of the Quintaglio Ascension Trilogy. The book depicts an Earth-like world on a moon which orbits a gas giant, inhabited by a species of highly evolved, sentient Tyrannosaurs called Quintaglios, among various other creatures from the late cretaceous period, imported to this moon by aliens 65 million years prior to the story. Originally published in 1993 by Ace Science Fiction, it won the Homer award for "Best Novel" during its initial release date. It was reissued in 2005 by Tor Books.

Plot summary

The story takes place roughly sixteen years after the events of Far-Seer. In lieu of Afsan's discovery of the Quintaglio's real place in the universe, the Larskian faith has been abolished and worship of the Original Five hunters reinstated. Dybo is now the Emperor, with Afsan as his court astrologer, and Novato has been put in charge of the Quintaglio Exodus; a project meant to help the Quintaglios escape from their doomed world before it breaks apart. Toroca, son of Afsan and Novato, is now head of the Geological Survey of Land, meant to take a global inventory of the resources available for the Exodus project.