{"product_id":"huge-scunthorpe-ammonite-aegasteroceras-sagittarium-england","title":"Huge Scunthorpe Ammonite | Aegasteroceras sagittarium | England","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eAegasteroceras sagittarium\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eEarly Jurassic (200 million years old)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eConesby Quarry, Scunthorpe, Lincolnshire, England\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eFrodingham Ironstone, Obtusum Zone\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSpecimen approx. size: 13\" x 11\"\u003c\/p\u003e\n\u003cp\u003eMatrix approx. size: 15\" x 13\" x 4\"\u003c\/p\u003e\n\u003cp\u003eSpecimen approx. weight: 28 lbs.\u003c\/p\u003e\n\u003cp\u003eStand not included.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe shell of this ammonite has been replaced by calcite, which contrasts nicely with some of the sutures. The base of the rock has been cut flat for aesthetic presentation without the need for a display stand.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAmmonoids are a group of extinct marine mollusk animals in the subclass Ammonoidea of the class Cephalopoda. These mollusks, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and the last species vanished in the Cretaceous–Paleogene extinction event.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAmmonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe name \"ammonite\" is derived from its spiral shape and fossilized shells, which bear a resemblance to tightly coiled ram's horns. Pliny the Elder (d. 79 AD near Pompeii) referred to these fossils as ammonis cornua (\"horns of Ammon\") due to the god Ammon (Amun) usually depicted with ram's horns. Many ammonite genera end in -ceras, derived from the Greek word for \"horn\" (κέρας).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe extinction of the ammonites, along with other marine animals and non-avian dinosaurs, has been attributed to the K-Pg extinction event, marking the end of the Cretaceous Period.\u003c\/span\u003e\u003c\/p\u003e","brand":"In Stone Fossils","offers":[{"title":"Default Title","offer_id":48650252091614,"sku":"SCNTHAMXL-DS","price":25000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0466\/5117\/9163\/files\/rn-image_picker_lib_temp_13e36015-e5f7-4ba5-9290-3b72603d20bb.jpg?v=1788390209","url":"https:\/\/instonefossils.com\/products\/huge-scunthorpe-ammonite-aegasteroceras-sagittarium-england","provider":"In Stone Fossils ","version":"1.0","type":"link"}