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Helicelasma selectum

Anthozoa - Stauriida - Streptelasmatidae

Taxonomy

No taxonomic data are available

Sister species
H. fossulatum, H. giganteum, H. randi, H. rusticum, H. simplex, H. whittardi

Synonymy list
No taxonomic opinions are available

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RankNameAuthor
kingdomAnimalia()
phylumCnidariaHatschek 1888
classAnthozoaEhrenberg 1834
—Hexacorallia()
subclassRugosa(Milne-Edwards and Haime 1850)
RankNameAuthor
orderStauriidaVerrill 1865
suborderStreptelasmatinaWedekind 1927
familyStreptelasmatidae(Nicholson 1889)
genusHelicelasma
speciesselectum

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available

Age range: Gamachian or 445.50000 to 443.10000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Ordovician458.2 - 443.1USA (Wyoming) Helicelasma selectum (28165)
Late/Upper Ordovician458.2 - 443.1Canada (Manitoba) Helicelasma selectum (28184 28185 28186)
Ashgill449.5 - 443.1Canada (Québec) Helicelasma selectum (28187 28190)
Gamachian445.5 - 443.1Canada (Québec) Helicelasma selectum (28188)