Simplify the following text for a Grade 11 native English-speaking person.
Original: Amblypygi is an order of invertebrate animals belonging to the class Arachnida , in the subphylum Chelicerata of the phylum Arthropoda .
Simplified: Amblypygi is an order of Arachnids , in the subphylum Chelicerata of the phylum Arthropoda .