1) Arthropod 
Tardigrades (also known as waterbears or moss piglets) are water-dwelling, segmented micro-animals, with eight legs. They were first described by the German pastor Johann August Ephraim Goeze in 1773. The name Tardigrada (meaning `slow stepper`) was given three years later by the Italian biologist Lazzaro Spallanzani. Since 1778, over 1,150 tard.....
slow-paced
• (n.) One of the Tardigrada. • (a.) Moving or stepping slowly; slow-paced. • (a.) Of or pertaining to the Tardigrada.
any of about 350 species of free-living, cosmopolitan invertebrates belonging to the phylum Tardigrada. In evolutionary development they are ... [3 related articles]
Tar'di·grade adjective [ Latin tardigradus ; tardus slow + gradi to step: confer French tardigrade .] 1. Moving or stepping slowly; slow-paced. [ R.] G. Eliot. 2. (Zoology) Of or pertaining to the Tardigrada. 
[n] - an arthropod of the division Tardigrada
tardigrade Moving slowly; a reference to sloths.
noun an arthropod of the division Tardigrada