Data from: A new mound-building biota from the lower Carboniferous of Alabama

A small (1.2 m) columnar carbonate mound in shaley strata equivalent to
the Hartselle Sandstone (lower Serpukhovian) near Woodville in
northeastern Alabama was built by a consortium of species unlike those of
other Carboniferous mounds in the southeastern United States. The mound
contains a new problematic microencruster, Aphralysia anfracta n. sp.,
along with encrusting bryozoans (Fistulipora M'Coy, 1849),
nonskeletal microbes, and other microencrusters, including Aphralysia
capriorae Mamet and Roux 1975, in a carbonate mud matrix. Mound cavities
are filled with three generations of carbonate and siliciclastic sediment.
Other biotic constituents of the mound include oncoids, sponges (including
Pileospongia Rigby et al., 1979), gastropods, crinoids, a tabulate coral,
and coenobionts, including coccoid calcimicrobes. The mound biota,
especially the microencrusters, is dramatically different from those of
other Serpukhovian mounds that have been described from Alabama (made by
various consortia of rugose corals, fenestrate bryozoa, crinoids, sponges,
and nonskeletal microbes). Indeed, the Woodville mound extends the range
of the lower Carboniferous encruster Aphralysia to North America.