Fossil

Megalodon

The name Megalodon derives from the Greek words megas (great) and odous (tooth), meaning “giant tooth.” This name is fitting, as Megalodon is primarily known from its massive fossilised teeth, some of which measure over 18 cm (7 inches) in length. First described by Swiss naturalist Louis Agassiz in 1835, Megalodon was once believed to

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Ichthyosaur

Ichthyosaur, meaning “fish lizards,” were a fascinating group of marine reptiles that thrived during the Mesozoic Era. Emerging in the Early Triassic period, not long after the Permian-Triassic mass extinction, they rapidly evolved to fill newly available marine niches. Their evolutionary journey, which spanned nearly 150 million years, showcases a remarkable case of convergent evolution

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Goniatites and Ammonites

The transition from Goniatites to Ammonites represents one of the most significant evolutionary shifts in marine invertebrate history. Both groups belong to the subclass Ammonoidea, a lineage of extinct cephalopods closely related to modern squids, octopuses, and cuttlefish. This evolutionary journey spans millions of years, showcasing changes in shell structure, adaptability, and ecological dominance. Goniatites:

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