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Common name: Mud Dragons
Name derivation: "moving snout"
Order Count: 4
Family Count: 10
Genus Count: 35
Species Count: 350
Earliest Fossil Record: Early Cambrian 537 - 529 mya
Habitat: Marine, Brackish
Size Range: 0.1 mm to 1 mm
Notes: Based on Catalogue of Life as of March 2025
< Gnathostomulida Loricifera >