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Hemizyga (Hemizyga)

Gastropoda - Pseudozygopleuridae

Taxonomy
Hemizyga (Hemizyga) was named by Girty (1915) [subgenus created by other subgenera.].

It was assigned to Hemizyga by Girty (1915).

Synonymy list
YearName and author
1915Hemizyga (Hemizyga) Girty

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassCaenogastropoda(Cox 1959)
superfamilyZygopleuroidea
familyPseudozygopleuridae()
genusHemizyga
subgenusHemizygaGirty 1915

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.

Subg. †Hemizyga (Hemizyga) Girty 1915
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†Hemizyga (Hemizyga) clathratula Young and Armstrong 1874
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height222.422.422.422.4-
shell diameter213.513.513.613.60.071

Composition: aragonitef
Environment: marinef
Locomotion: actively mobilef
Life habit: epifaunalf
Diet: detritivoref
Vision: limitedf
Created: 2025-08-07 22:21:22
Modified: 2025-08-07 22:21:22
Source: f = family
References: Wagner 2023, Kiessling 2004

Age range: base of the Brigantian to the top of the Kungurian or 335.90000 to 274.40000 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Brigantian335.9 - 330.3United Kingdom (England) Hemizyga bilineata, Hemizyga heliciforma, Hemizyga clathratula (57131)
Moscovian315.2 - 307.0USA (Missouri) Hemizyga corbis (69773)
Desmoinesian312.8 - 306.0USA (New Mexico) Hemizyga sp. 1, Hemizyga sp. 2, Hemizyga sp. 3 (46536)
Virgilian303.7 - 298.9USA (New Mexico) Hemizyga expansa (156715) Hemizyga sp. 1 (156695)
Kungurian283.3 - 274.4Malaysia (Perak) Hemizyga globosa (62131)