Where did the Placodus live?
The placodonts were a group of marine reptiles that lived in shallow coastal waters, and mostly ate hard-shelled prey such as mussels and other bivalves (that is, they were durophagous). They lived during the Triassic period, and have so far been found in modern-day Europe, the Mediterranean and South China (Fig.
When did Placodonts go extinct?
They are found in marine sediments of the Middle and Upper Triassic, 235–250 million years ago. The first specimen was discovered in 1830, and the group was very widely distributed. Shellfish were common throughout the Mesozoic period, but this group of shellfish-eaters went extinct at the end of the Triassic.
When did Placodus live?
251.2 million years ago – 235 million years ago (Olenekian – Ladinian)
Placodus/Lived
When did plesiosaurs go extinct?
66 million years ago
Finally extinct Plesiosaurs thrived during the Jurassic and Cretaceous. Some evolved into the short-necked, large-headed pliosaurs, such as the enormous Predator X. They died out 66 million years ago, along with the dinosaurs.
Is Placodus a dinosaur?
Placodus (meaning ‘flat tooth’) was a genus of marine reptiles, belonging to the order Placodontia, which swam in the shallow seas of the middle Triassic period (c….Placodus.
| Placodus Temporal range: Middle Triassic, | |
|---|---|
| Order: | †Placodontia |
| Family: | †Placodontidae Cope, 1871 |
| Genus: | †Placodus Agassiz, 1833 |
| Species |
Where are plesiosaurs found?
Plesiosauria were marine reptiles living between the late Triassic and late Cretaceous periods, covering about 155 million years. They were completely aquatic. Fossils have been found in coastal areas near Europe, and in the Pacific around Asia, Australia, and North America.
When was the plesiosaur found?
The first scientifically documented plesiosaur fossils were discovered during the early 19th century by Mary Anning.
Is a plesiosaur a dinosaur?
Marine reptiles, such as ichthyosaurs, plesiosaurs and mosasaurs are not dinosaurs. Nor is Dimetrodon or other reptiles in the same group (previously called ‘mammal-like reptiles’ and now called synapsids).
Who found the plesiosaur?
Anning
In 1823, Anning discovered the first complete skeleton of a plesiosaur, another reptile that replaced ichthyosaurs as the sea’s top predators in the Jurassic period. That was followed by a pterosaur in 1928 – the first found outside Germany. She was also the first to identify fossilised faeces, known as coprolites.