{"product_id":"jawless-armored-fish-cyathaspidida","title":"Jawless Armored Fish (Americaspis americana)","description":"\u003cp\u003eCyathaspidida are extinct spindle-shaped fish that lived near or in the bottom of the ocean floor roughly 420 million years ago.\u003c\/p\u003e\n\u003cp\u003eThese interesting creatures were completely protected by armored plates, including a scaled tail. They moved more like tadpoles using a scaled tail because they did not have fins. Fossils of this species are rarely found, and the tails are virtually never fossilized, generally leaving just the head shields.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cem\u003eAmericaspis\u003c\/em\u003e was originally described in 1884 by Edward Waller Claypole as \u003cem class=\"zhvwWe\"\u003ePalaeaspis americana\u003c!--TgQPHd|||[]--\u003e\u003c\/em\u003e. It was the first Silurian \u003cem\u003eostracoderm \u003c\/em\u003e(extinct jawless fish) discovered in the Western Hemisphere. It was later reassigned to the genus \u003cem class=\"zhvwWe\"\u003eAmericaspis\u003c!--TgQPHd|||[]--\u003e\u003c\/em\u003e.\u003c\/p\u003e\n\u003cp\u003eThis fossil shows two dorsal shields in matrix\u003cem\u003e. \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eType: Jawless Armored Fish (cyathaspids)\u003cbr\u003eSpecies\u003cem\u003e: Americaspis americana\u003cbr\u003e\u003c\/em\u003eAge: Late Silurian (420 million years ago)\u003cbr\u003eFormation: Wills Creek Formation\u003cbr\u003eLocality: Perry County, Pennsylvania\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSize: 6L x 3W x 1.25H inches\u003cbr\u003eWeight: 1.8 lbs.\u003c\/p\u003e","brand":"Past \u0026 Present Science and Nature Store","offers":[{"title":"Default Title","offer_id":48401916985481,"sku":null,"price":230.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0364\/6069\/1593\/files\/1DA035F0-798E-4561-8867-51A4BECB029D.jpg?v=1790012576","url":"https:\/\/pastpres.com\/products\/jawless-armored-fish-cyathaspidida","provider":"Past \u0026 Present Science and Nature Store","version":"1.0","type":"link"}