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Rhopalonaria tenuis (Ulrich & Bassler, 1904)

Rhopalonaria tenuis
Rhopalonaria tenuis

Scientific Classification

Kingdom: Animalia
Phylum: Bryozoa
Class: Gymnolaemata
Order: Ctenostomata
Family: Ropalonaridae
Genus: Rhopalonaria
Species: Rhopalonaria tenius (Ulrich & Bassler, 1904)

Information

Geological Range

Middle Devonian

Paleogeographic Distribution

Wisconsin

Stratigraphic Occurrences

Milwaukee Formation
Lindwurm Member

References

Ulrich (1904): p. 270.

Cleland (1911): p. 53.

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

Remarks

From Cleland (1911, p. 53): “Fusiform cells attenuate, averaging about 3 in 2.0 mm, occassionally only 4 in 3.0 mm; greatest diameter of same about 0.5 mm … The connecting stolons rarely equal the fusiform swellings in length, the average, however, is considerbly less.”

Online Resources

Biodiversity Heritage Library

Media

Images

Photograph of fossil of Rhopalonaria tenuis (MPM P15641).
Rhopalonaria tenuis from the Milwaukee Fm. (Lindwurm Mbr.) of Milwaukee County, Wisconsin (MPM P15641).

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