Translingual

Cyclostomata, such as these lampreys, are so named for their round mouths.

Wikispecies

Proper noun

Cyclostomata

1. A taxonomic class within the subphylum Vertebrata – the living jawless fishes: lampreys and hagfishes; the cyclostomes.
   • 1834, Peter Mark Roget, Animal and Vegetable Physiology, volume 2, William Pickering, page 116:

     Among fishes, we meet with the family of Cyclostomata, so called from their having a circular mouth, formed for suction.

   • 2009, Shigehiro Kuraku et al., "Jawless Fishes (Cyclostomata)", The Timetree of Life, Oxford University Press, page 317:

     Cyclostomata comprises two families of living jawless fishes: hagfishs (Myxinidae, 44 species) and lampreys (Petrymyzonidae, 41 species).

2. A taxonomic order within the phylum Bryozoa – the Cyclostomatida.

Hypernyms

• (class): Eukaryota - superkingdom; Animalia - kingdom; Bilateria - subkingdom; Deuterostomia - infrakingdom; Chordata - phylum; Vertebrata - subphylum; Agnatha - infraphylum
• (order): Eukaryota - superkingdom; Animalia - kingdom; Bilateria - subkingdom; Protostomia - infrakingdom; Spiralia - superphylum; Bryozoa - phylum; Stenolaemata - class

Hyponyms

• (class): Myxiniformes, Petromyzontiformes - orders

Coordinate terms

• (class): Gnathostomata