Pikaia gracilens

Pikaia gracilens

Navigazione

Navigazione: Chordata
Superregnum: Eukaryota Cladus: Orthokaryota Cladus: Neokaryota Cladus: Scotokaryota Cladus: Podiata Cladus: Amorphea Cladus: Obazoa Cladus: Opisthokonta Cladus: Holozoa Cladus: Filozoa Cladus: Choanozoa Regnum: Animalia Subregnum: Eumetazoa Cladus: ParaHoxozoa Cladus: Bilateria Cladus: Nephrozoa Superphylum: Deuterostomia Phylum: Chordata

Stem-group Chordata
Genus: †Pikaia
Species: †Pikaia gracilens

Nome

Pikaia gracilens Walcott, 1911: 132

Riferimenti

Primary references

• Walcott, C.D. 1911. Middle Cambrian annelids. In: Cambrian geology and paleontology. II. Smithsonian Miscellaneous Collections 57(5): 109–144, pls. 18–23. BHL. Reference page.