Rugosa


Rugosa

:"The Rugosa Rose is also sometimes just called "Rugosa"Taxobox
fossil_range = fossil range|488|251.4OrdovicianPermian



image_caption = "Tetracoralla" from Ernst Haeckel's "Kunstformen der Natur", 1904
regnum = Animalia
phylum = Cnidaria
classis = Anthozoa
subclassis = Zoantharia
ordo = Rugosa
subdivision_ranks = Suborders
subdivision =
Columnariina
Cystiphyllina
Streptelasmatina

The Rugosa, also called the Tetracoralla, are an extinct order of coral that were abundant in Middle Ordovician to Late Permian seas.

Solitary rugosans (e.g., "Caninia", "Lophophyllidium", "Neozaphrentis", "Streptelasma") are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or , wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g., "Lithostrotion"). When radiating septa were present, they were usually in multiples of four.

Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Although there is no direct proof, it is inferred that these Palaeozoic corals possessed stinging cells to capture prey. They also had tentacles to help them catch prey. Technically they were carnivores, but prey-size was so small they are often referred to as microcarnivores.

External links

*Color reconstruction of the Devonian coral Heliophyllum halli at [http://www.emilydamstra.com/portfolio2.php?illid=142 www.emilydamstra.com]


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Look at other dictionaries:

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  • Rugosa — или Tetracorallia, или четырехлучевые кораллы отряд подкласса сцифополипы или коралловые полипы (см.), или Anthozoa. Исключительно вымершие формы преимущественно палеозойской эпохи, от которых сохранился лишь скелет, характеризующийся четверным… …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона


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