Nowadays, fossil ammonite is commonly found in most sedimentary rocks of the Devonian and Cretaceous periods, with outcrops of such rocks found in mountains and sedimentary basins. Titanite, from Portland stone, Jurassic, Southern Britain, is frequently 53 centimeters (1.74 ft) in diameter, while the Parapuzosia seppenradensis of the Cretaceous period, is among the largest known ammonite, sometimes reaching up to 2 meters (6.6 ft) across.
The largest ammonite fossil ever discovered belongs to the species Parapuzosia seppenradensis the fossil, which was found in Germany in 1895, has a gargantuan shell measuring 5.7 feet (1.7 m) across.
The largest ammonite fossil discovered belongs to the species Parapuzosia seppenradensis this fossil was found in Germany in 1895, with an enormous shell measuring 5.7 feet (1.7 m) wide. The 66 Parapuzosia specimens ranged from 0.3 to 4.8 feet (0.1 to 1.48 meters) in width, representing various stages of the ammonite growth cycle. leptophylla, but ammonites of more imposing sizes appeared in the fossil record from the mid-to-early Campanian. The oldest of these specimens reached just 3.2 feet across, similar to smaller P. seppenradensis evolved to such impressive sizes. In the United States, New Jersey has been associated with many noteworthy ammonite finds.Īlthough this famous fossil was discovered over a century ago, very few ammonite fossils of a similar size were found until more recently, leaving large questions as to how and when P. Antarctica is also known to host a large number of ammonite fossils. Ammonite fossils are found all over the world, but they appear most frequently near shorelines and in deserts.
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