Vital statistics
Attributes Tough armour; largest arthropod; provided parental care; powerful tail; sharp pincers and mandibles
Diet Brontoscorpio; fish; other arthropods; cephalopods
Fossil finds Worldwide, except Antarctica
Temporal fossil range Silurian
420 to 410mya
Other names
Production information
Notable individuals
TV appearances Walking with Monsters: Water Dwellers
Book appearances

Pterygotus was a large eurypterid from the Silurian. It was one of the largest arthropods ever to live.

Physical appearance and biologyEdit

Pterygotus was a large eurypterid that possessed long pincers. Unlike modern scorpions, this animal had a flat tail designed to propel it through the water. It also two, large, black compound eyes.

Unlike some eurypterids like Megalograptus, Pterygotus' arms and legs were stalk-like and were able to keep the animal supported underwater.  Its pincers were more like modern scorpions rather than more basal eurypterids.

Behaviour and traitsEdit

WWM1x1 Pterygotus+Orthocone

A Pterygotus swimming near a pair of orthocones. (Water Dwellers)

Pterygotus were powerful predators that hunted solitarily. They would hide underneath the sea bed and would then erupt from it and attack its prey. It would then tear apart its victim and would then force the meat into its mouth with its mandibles.

Female Pterygotus provided parental care to their young. If she caught a prize, she would share between herself and her offspring. Judging by this, it is apparent that after mating, the male Pterygotus would leave his mate and his developing offspring.

Pterygotus' tail was designed as a whale-esque fluke.  This specialised design would have made it a relatively powerful swimmer.  It moved its tail in a up-and-down motion.

In Walking with MonstersEdit

WWM1x1 PterygotusFeedsYoung

A mother Pterygotus feeding a Brontoscorpio to her offspring. (Water Dwellers)

Water DwellersEdit

Three Pterygotus were seen swimming near a pair of orthocones and a group of Brontoscorpio.

A female Pterygotus ambushed a Brontoscorpio that was chasing a Cephalaspis. Once she dismembered the scorpion, she fed the corpse to her offspring.

Behind the scenesEdit

List of appearancesEdit

Palaeontological inaccuraciesEdit

  • Pterygotus is not the largest arthropod ever. The largest arthropod is in fact another eurypterid called Jaekelopterus.

Notes and referencesEdit

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