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Seriola Prisca
''Seriola prisca'' (''prisca'' being Latin for "ancient") is an Extinction, extinct species of prehistoric marine Actinopterygii, ray-finned fish from the Eocene. Complete fossil specimens are known from the famous Ypresian, Early Eocene-aged Monte Bolca site of Italy. It was a close relative of modern amberjacks, belonging to the same genus as them (''Seriola''), and is one of the oldest known members of the genus. Due to its age and it belonging to an extant genus, it has often been used to provide a minimum age constraint for divergence of the Carangidae, carangid radiation. It closely resembles and may be related to the extinct species ''Seriola natgeosoc, S. natgeosoc'' from the Bartonian of North Caucasus, Russia. It was first erroneously identified in 1796 by Giovanni Serafino Volta as a fossil specimen of the extant "''Scomber pelagicus''" (now synonymized with the modern mahi-mahi). In 1834, it was described by Louis Agassiz as ''Lichia prisca'', who considered it an ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Eocene
In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the Lower Eocene (Early Eocene). Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. The Ypresian is additionally marked by another warming event called the Early Eocene Climatic Optimum (EECO). The EECO is the longest sustained warming event in the Cenozoic record, lasting about 2–3 million years between 53 and 50 Ma. The interval is characterized by low oxygen-18 isotopes, high levels of atmospheric pCO2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
