Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Hemiphragma irrasum

Stenolaemata - Trepostomata - Dittoporidae

Taxonomy
Batostoma irrasum was named by Ulrich (1893). It is the type species of Hemiphragma.

It was recombined as Hemiphragma irrasum by Bassler (1911).

Sister species lacking formal opinion data
H. minimum, H. ottawaense, H. ottawaensis, H. pulchra, H. shermanense, H. subtile

Synonymy list
YearName and author
1911Hemiphragma irrasum Bassler

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
RankNameAuthor
phylumBryozoaEhrenberg 1831
classStenolaemataBorg 1926
orderTrepostomataUlrich 1882
suborderHalloporinaAstrova 1965
familyDittoporidaeVinassa de Regny 1920
genusHemiphragmaUlrich 1893
speciesirrasum(Ulrich 1893)

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.

†Hemiphragma irrasum Ulrich 1893
show all | hide all
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Environment: marineuc
Locomotion: stationaryc
Attached: yesc
Life habit: epifaunalp
Diet: suspension feederc
Vision: blindc
Created: 2007-09-18 02:11:14
Modified: 2010-02-15 07:19:29
Source: c = class, p = phylum, uc = unranked clade
References: Smith et al. 2006, Nesnidal et al. 2013, Kiessling 2004

Age range: base of the Kunda to the top of the Blackriveran or 469.10000 to 449.60000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Kunda469.1 - 464.3Estonia Hemiphragma irrasum (167596)
Blackriveran457.3 - 449.6USA (Tennessee) Hemiphragma irrasum (5328 5329)
Blackriveran457.3 - 449.6USA (Minnesota) Hemiphragma irrasum (167592)
Blackriveran457.3 - 449.6USA (Oklahoma) Hemiphragma irrasum (23899)
Kirkfieldian457.3 - 449.6USA (Minnesota, Iowa) Hemiphragma irrasum (23379)
Rocklandian457.3 - 449.6USA (Minnesota, Iowa, Wisconsin, Illinois) Hemiphragma irrasum (23309 23312 23314 23377 23378)