Placodus (from Greek: plax, plakos, "a plate" and Greek: odous, "tooth") [1] is an extinct genus of marine reptiles belonging to the order Placodontia, which swam in the shallow seas of the middle Triassic period (c. 240 million years ago).

Jan 19, 2014 · Placodus is one of the most often represented reptiles of the placodont group,‭ ‬and the most common of the‭ ‘‬unarmoured‭’ ‬variety that seemed to be similar to marine iguanas.‭ ‬Unlike the algae eating marine iguana however,‭ ‬Placodus was a dedicated durophagous shellfish eater.‭ ‬In its search for food it used ...

Placodus was a typical form, having broad, flat tooth plates for crushing the mollusks on which it fed. Many placodonts evolved dermal armour, with Henodus having a shell comparable to that of a turtle.

Placodonts (" tablet teeth ") are an extinct order of marine reptiles that lived during the Triassic period, becoming extinct at the end of the period. They were part of Sauropterygia, the group that includes plesiosaurs.

Placodonts were peculiar, mollusc-eating marine reptiles known only from the Triassic of Europe and the Middle East. Looking something like a cross between a walrus and a turtle, they came in armoured and unarmoured varieties (see below) and were first discovered by …

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. 1).

An amended diagnosis based on homologies (synapomorphies) is provided for the genus Placodus and its only known species. The skeletal structure of Placodus is described, and the phylogenetic interrelationships of the genus are discussed.

Placodonts were relatively small creatures; most ranged between three and six feet long, and the largest clocked in around nine feet in length. In general terms they were short-limbed, robust animals that seem designed for life in shallow, near-shore environments.

Placodus - Reptile evolution from its genesis to today, including the evolution of man, mammals, birds, dinosaurs and reptiles of all sorts

Placodus was a placodontid from what is now Germany. It lived during the middle Triassic. Like Paraplacodus, Placodus had protruding teeth at the front. However they are shorter, thicker and more spoon-shaped. The crushing teeth are not confined …