Phylum - Gnathostomulida
Common name: Jaw Worms
Name derivation: "jaw mouth"
Number of Orders: 2
Number of Families: 12
Number of Genus: 26
Number of known Species: 100
Earliest Fossil Record: none
Habitat: Marine
Size Range: 0.2 mm to 4.3 mm
Notes: Based on Catalogue of Life as of July 2024