Tabulipora maculosa Nikiforova, 1938
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A nice collection of branches of the bryozoan Tabulipora maculosa,
a species that grows many growth forms but is characterized by large
diameter branches and a thick colony formed of long curved tubes.
This species is similar to the common North Amerian species
Tabulipora carbonaria (Worthen, 1875) that is extensively documented
by Cuffy (1967). However, the cross sections shown in photo 3 and 4
show the central area of the branch to have tubes with 4 sides that are
arranged in a grid-like pattern characteristic of the genus Rhombotrypella,
a bryozoan genus that is common in the Permian. Rhombotrypella evolved
from Tabulipora, so this species of Tabulipora includes colonies that are
transitional to the descendant genus.
Cuffy, R.J., 1967, Bryozoan Tabulipora carbonaria in Wreford
Megacyclothem (Lower Permian) of Kansas; University of Kansas
Paleontological Contributions, Bryozoa, Article 1, 96 p. 9 pls.
Phylum Ectoprocta (bryozoans)
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