The tabulate corals, forming the order Tabulata, are an extinct form
of coral. They are almost always colonial, forming colonies of
individual hexagonal cells known as corallites defined by a skeleton
of calcite, similar in appearance to a honeycomb. Adjacent cells are
joined by small pores. Their distinguishing feature is their
well-developed horizontal internal partitions (tabulae) within each
cell, but reduced or absent vertical internal partitions (septa). They
are usually smaller than rugose corals, but vary considerably in
shape, from flat to conical to spherical.
Around 300 species have been described. Among the most common tabulate
corals in the fossil record are Aulopora, Favosites, Halysites,
Heliolites, Pleurodictyum, Sarcinula and Syringopora. Tabulate corals
with massive skeletons often contain endobiotic symbionts, such as
cornulitids and Chaetosalpinx.
Like rugose corals, they lived entirely during the Paleozoic, being
found from the
Etched section of an
The coral Protaraea richmondensis on the brachiopod Rafinesquina ponderosa; Whitewater Formation, Indiana, Upper Ordovician.
Tabulate coral Calapoecia huronensis Billings, 1865; Waynesville Formation, Upper Ordovician, Caesar Creek, Ohio.
^ Vinn, O.; Mõtus, M.-A. (2012). "Diverse early endobiotic coral
symbiont assemblage from the Katian (Late Ordovician) of Baltica".
Palaeogeography, Palaeoclimatology, Palaeoecology. 321–322:
137–141. doi:10.1016/j.palaeo.2012.01.028. Retrieved
^ Vinn, O.; Mõtus, M.-A. (2008). "The earliest endosymbiotic
mineralized tubeworms from the
Invertebrate Fossils; Moore, Lalicker, & Fischer; McGraw-Hill 1952. Treatise on Invertebrate Paleontology Part F, Coelenterata. Geological Society of America and Univ Kansas Press. R.C. Moore (ed).
Wd: Q135282 EoL: 4691087 Fossilworks: 81676
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