Search results
Results from the WOW.Com Content Network
The ammolite gems are triplets, as evidenced by their convex profiles. Ammolite is best used in pendants, earrings, and brooches due to its fragility. Compared to most other gems, ammolite has a rather scant history of use; it did not begin to garner interest in Western society until the 1970s after entering the market (to a limited degree) in ...
Fossils. Dorling, Kindersley Limited, London, 2002. A Broad Brush History of the Cephalopoda by Dr. Neale Monks, from The Cephalopod Page. Ammonite maturity, pathology and old age By Dr. Neale Monks, from The Cephalopod Page. Essay about the life span of Ammonites. Cretaceous Fossils Taxonomic Index for Order Ammonoitida
A variety of ammonite forms, from Ernst Haeckel's 1904 Kunstformen der Natur.. This list of ammonites is a comprehensive listing of genera that are included in the subclass †Ammonoidea, excluding purely vernacular terms.
The Bearpaw Formation is famous for its well-preserved ammonite fossils. These include Placenticeras meeki , Placenticeras intercalare , Hoploscaphites , and Sphenodiscus , the baculite Baculites compressus and the bivalve Inoceramus , some of which are mined south-central Alberta to produce the organic gemstone ammolite.
Acanthoceras fossils have been found in Australia, Brazil, Bulgaria, Colombia (Hondita Formation, ...
Placenticeras sp. ammolite, Bearpaw Formation. At the Royal Tyrrell Museum of Palaeontology. Placenticeras has a very involute shell with slightly convex sides and a very narrow venter. Side are smooth or with faint sinuous ribs. Early whorls have umbilical tubercles that in later whorls appear higher on the sides.
The original fossil is shown in the foyer of the Westphalian Museum of Natural History, Münster, Germany. It was once estimated that, if complete, this specimen would have had a diameter of approximately 2.55 m (8.4 ft) [2] or even 3.5 m (11 ft). [3]
Jupiter Ammon, depicted in a terracotta fragment. A fossil ammonite, showing its horn-like spiral. Ammon, eventually Amon-Ra, was a deity in the Egyptian pantheon whose popularity grew over the years, until growing into a monotheistic religion in a way similar to the proposal that the Judeo-Christian-Islamic deity evolved out of the Ancient Semitic pantheon. [2]