웹Isipin ang salmon nang baligtad: ang mga mahaba na snout na mga Bandringa sharks ay lumipat sa agos mula sa mga freshwater swamp hanggang sa isang tropical na baybayin hanggang sa 310 milyong taon na ang nakalilipas - naiwan sa isang fossil nursery, na natagpuan ng mga mananaliksik. Ang mga bandringa pating. 웹Fig. 84. Bandringa rayi, n.g., n.sp., plate and counterplate of concretion, FMNH PF 5686. Bandringa, new genus Diagnosis. — Sharks with two dorsal fins equipped with fin spines. An anal fin present. Teeth cladodontid, snout enormously elongated, but Meckel's cartilage of normal length, hence mouth opening sub-
Bandringa rayi (fossil shark) (Mazon Creek Lagerstätte, Fr… Flickr
웹This order of sharks contains some of the most publicly-familiar species of large, active, pelagic sharks. The order also includes the rarely seen, deep-water species - the Goblin shark and Megamouth shark. All members of this order have cylindrical bodies, 5 gills, 2 spineless dorsal fins, an anal fin, and eyes without nictitating membranes. 웹2014년 1월 7일 · An artist's rendering of Bandringa, a 310 million-year-old shark originally found in fossil deposits from Mazon Creek, Illinois. Credit: Painting by John Megahan, University of Michigan. btsg ccs
Mazon Monday #19: Species Spotlight: Bandringa rayi …
웹2014년 1월 7일 · Bandringa was discovered in 1969 and soon Like salmon in reverse, long-snouted Bandringa became one of the most prized fossils from the well- sharks migrated downstream from freshwater known Mazon Creek deposits in northern Illinois. swamps to a tropical coastline to spawn 310 million Until now, researchers believed that the genus years … 웹2024년 6월 12일 · English: Life restoration of the small, peculiar Carboniferous chondrichthyan Bandringa rayi. References. File:Bandringa rayi fossil shark, Mazon Creek Lagerstatte.jpg; Compagno, Leonard J. V. (2004). "Alternative life-history styles of cartilaginous fishes in time and space".Environmental Biology of Fishes 38: 33-75. (Fig. 25) 웹A new reconstruction of Bandringa incorporates several previously unreported features, including ventrally directed jaws, stellate squamation, a branched lateral line, and fin spines bearing smooth costae, which provide a more complete picture of hard- and soft-tissue anatomy than resident taxa from a single deposit. ABSTRACT The shark Bandringa … bts gdea redon