pterygotus การใช้

• It was related to another large eurypterid, " Pterygotus ".
• Fossils of " Pterygotus " are relatively common, although complete skeletons are rare.
• However, the latter is unlikely since " Pterygotus " was such a large creature.
• "Pterygotus " is distinguishable from other pterygotids by the curved distal margin of the chelae.
• Then, when a fish or other unwitting animals came within range, " Pterygotus " would rise up and grab it with its claws.
• The genus closely related to " Pterygotus ", of which several species were originally placed in, and to the giant " Jaekelopterus ".
• "Pterygotus " could reach a body length of, had a pair of large compound eyes, as well as another pair of smaller eyes in the center of its head.
• The marine scorpion " Brontoscorpio " pursues a " Cephalaspis " but falls victim to the giant eurypterid " Pterygotus ", whose young feed on the smaller scorpion's body.
• At the top of this sub-group, near Ludlow, a brown layer occurs, from a quarter of an inch to 4 in . ( 63 mm to 100 mm ) in thickness, full of the fragmentary remains of fish associated with those of " Pterygotus " and mollusca.