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Hemitrypa tenera (Ulrich, 1890)

Hemitrypa tenera
Hemitrypa tenera

Scientific Classification

Kingdom: Animalia
Phylum: Bryozoa
Class: Stenolaemata
Order: Cryptostomata
Family: Fenestellidae
Genus: Hemitrypa
Species: Hemitrypa tenera (Ulrich, 1890)

Information

Geological Range

Middle Devonian

Paleogeographic Distribution

Wisconsin

Stratigraphic Occurrences

Milwaukee Formation
Lindwurm Member

References

Ulrich (1890): p. 559.

Cleland (1911): p. 66.

Gass et al. (2019): p. 46.

Remarks

From Cleland (1911, p. 66): “The obverse is very delicate net-work in which the principal and secondary bars are indistinguishable, being equal in width the both zigzag; connected by lateral bars or scale of the same width, they form equal hexagonal intersectices, arranged in very regular vertical and diagonally intersecting series, twelve in 3 mm. measuring along the rows.”

Online Resources

Global Biodiversity Information Facility

Media

Images

Photograph of fossil of Hemitrypa tenera (MPM P16154)
Hemitrypa tenera from the Milwaukee Fm. (Lindwurm Mbr.) of Milwaukee County, Wisconsin (MPM P16154).

Related

Lichenalia concentrica
Cyclotrypa collina
Eridotrypa appressa