Everything about Tabulate Coral totally explained
Ordovician–
Permian
| image = Tabulata Favosites.jpg
| image_caption =
Favosites sp
| regnum =
Animalia
| phylum =
Cnidaria
| classis =
Anthozoa
| subclassis =
Zoantharia
| ordo =
Tabulata
}}
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 (
septae). 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 commonest tabulate corals in the
fossil record are
Chaetetes,
Favosites,
Halysites,
Heliolites,
Pleurodictyum,
Sarcinula and
Syringopora.
Like rugose corals, they lived entirely during the
Paleozoic, being found from the
Ordovician to the
Permian. With
Stromatoporoidea and rugose corals, the tabulate corals are characteristic of the shallow waters of the
Silurian to the
Devonian. Sea levels rose in the Devonian, and tabulate corals became much less common. They finally became extinct in the
Permian-Triassic extinction event.
Further Information
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