''Pyrostremma'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of marine

pyrosome Pyrosomes are free-floating colonial tunicates in family Pyrosomatidae. Pyrosomes consist of colonies of small Zooids. There are three genera, '' Pyrosoma'', '' Pyrosomella'' and '' Pyrostremma'', and eight species. They usually live in the uppe ...

containing 2 species.

Taxonomy

''Pyrostremma'' contains the following species: * '' Pyrostremma agassizi'' (Ritter & Byxbee, 1905) * ''

Pyrostremma spinosum ''Pyrostremma'' is a genus of marine pyrosome Pyrosomes are free-floating colonial tunicates in family Pyrosomatidae. Pyrosomes consist of colonies of small Zooids. There are three genera, '' Pyrosoma'', '' Pyrosomella'' and '' Pyrostremma'', ...

'' (Herdman, 1888)

References

Pyrosomatidae Tunicate genera {{Tunicata-stub