2023年8月31日 · Today’s extant arowanas are considered prehistoric fish because they diverged from primitive clades of Asian and Australian arowanas, with which they still share many traits. The fossils of these ancestral fish date as far back as the Middle Jurassic period, which took place about 170 million years ago.

2010年5月14日 · Gars are among the oldest fish alive today; their origins can be traced back to the Cretaceous period. These african fish are often called “dinosaur eels”, due to their reptilian appearance and serrated dorsal fin, reminiscent of some dinosaurs’ spiked backs. They are not really eels, but members of the bichir family.

2021年4月22日 · Millions of years later there still exists “living fossils” – creatures that have survived the Ice Age and continue to swim both lake and sea to this day. In honor of those fish species that can keep on, keepin’ on, here are the top …

2019年2月13日 · The lamprey is a parasitic fish that has survived four major evolutionary extinctions in their 360 million years of swimming the ocean—though they are now mainly confined to the Atlantic Ocean and (a non-native population) in the Great Lakes. Similar in structure to leeches or eels, they do not possess bones, but instead have a cartilaginous ...

2021年12月18日 · Fossilized remains helped experts date the supposedly extinct fish species back 66 million years, to the Late Cretaceous period. But on a dewy morning in December 1938, a South African museum curator shockingly rediscovered them — alive.

Here are 12 of the oldest marine species in the ocean you can still find under the surface today. 1. Frilled shark. With strange eel-like features, this animal doesn’t look like many of the other sharks we’re familiar with today. It is a shark though; it’s just …

2021年5月14日 · Scientists were shocked to find a member of the "Latimeria chalumnae" species still alive, with its eight fins, a specific spotting pattern on the scales and huge bodies.