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Description
Plateosaurus engelhardti - Swabian Lindwurm

Temporal range: Late Triassic, Upper Norian-Rhaetian, ~208-204 Ma

Length: Around ~5-10 metres
Mass: Est. ~470 kilograms - ~4.3 tonnes

Etymology: Engelhart's flat reptile

Plateosaurus was a large basal sauropodomorph that lived in what is now Europe. Once thought to be quadrupedal, it has been found in 2010 via the use of biomechanical skeletal models that it was an obligate biped.

It has a very wide size range, much more than what is known from most other dinosaurs, with large adults being nearly 10 times as large as the smallest adults. Its age at skeletal maturity also varies very greatly, taking anywhere from 12 years to perhaps up to 30 years or more; the oldest known specimen was around ~27 years old at death and still skeletally immature. Like with all other non-avian dinosaurs, the maximum life span of Plateosaurus is unknown, as the specimens known died from accidents and the usual lack of senescent specimens known so far.

Comparisons of its scleral rings with that of modern sauropsids suggests that Plateosaurus was probably cathemeral, active throughout the day and night on random time periods.

The majority of Plateosaurus specimens were found in Germany, particularly the Trossingen Formation. The clay pits of Frick, Switzerland, also yielded a substantial amount of Plateosaurus specimens.

It was featured in the 1999 BBC documentary series Walking With Dinosaurs, where it was depicted in accordance with the science for that time, as the study which concluded that it was an obligate biped was published more than a decade afterward.
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Based on 's Plateosaurus

Description
Plateosaurus engelhardti - Swabian Lindwurm

Temporal range: Late Triassic, Upper Norian-Rhaetian, ~208-204 Ma

Length: Around ~5-10 metres
Mass: Est. ~470 kilograms - ~4.3 tonnes

Etymology: Engelhart's flat reptile

Plateosaurus was a large basal sauropodomorph that lived in what is now Europe. Once thought to be quadrupedal, it has been found in 2010 via the use of biomechanical skeletal models that it was an obligate biped.

It has a very wide size range, much more than what is known from most other dinosaurs, with large adults being nearly 10 times as large as the smallest adults. Its age at skeletal maturity also varies very greatly, taking anywhere from 12 years to perhaps up to 30 years or more; the oldest known specimen was around ~27 years old at death and still skeletally immature. Like with all other non-avian dinosaurs, the maximum life span of Plateosaurus is unknown, as the specimens known died from accidents and the usual lack of senescent specimens known so far.

Comparisons of its scleral rings with that of modern sauropsids suggests that Plateosaurus was probably cathemeral, active throughout the day and night on random time periods.

The majority of Plateosaurus specimens were found in Germany, particularly the Trossingen Formation. The clay pits of Frick, Switzerland, also yielded a substantial amount of Plateosaurus specimens.

It was featured in the 1999 BBC documentary series Walking With Dinosaurs, where it was depicted in accordance with the science for that time, as the study which concluded that it was an obligate biped was published more than a decade afterward.
________________

Based on 's Plateosaurus