Stromatoporoidea

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Stromatoporoidea

[strə‚mad·ə·pə‚rȯid·ē·ə]
(paleontology)
An extinct order of fossil colonial organisms thought to belong to the class Hydrozoa; the skeleton is a coenosteum.

Stromatoporoidea

 

a group of fossil invertebrates. The taxonomic position of Stromatoporoidea is uncertain, and they have been arbitrarily assigned to the sponges or coelenterates.

Stromatoporoidea lived from the early Paleozoic to the late Mesozoic. They were colonial organisms. The calcareous skeleton ranged in shape from lamellar to cylindrical and spheroidal and ranged in size from several millimeters to several meters in diameter. It consisted of horizontal plates (lamellae) and vertical elements (columellae), which differed in degree of development from group to group. Very characteristic of Stromatoporoidea was a system of canals that consisted of one vertical canal and several horizontal canals branching from the vertical canal at different levels. There were approximately 70 genera, which inhabited shallow seas. Together with corals, Stromatoporoidea contributed to the formation of coral reefs in the Silurian-Devonian. The Stromatoporoidea are important in the stratigraphy of Silurian and Devonian deposits.

References in periodicals archive ?
In the uppermost part of the Arab-D are occasional zones that contain more than 10 per cent of a stromatoporoid sponge known as cladocoropsis.
The Duperow Formation is a complex system of limestone, dolostone with lenses of mudstone and siltstone beds, along with interbedded fossiliferous stromatoporoid banks, as well as anhydrite beds.
Other common fossils include stromatoporoid sponges, colonial rugose and tabulate corals, brachiopods, bryozoans, gastropods, cephalopods, and trilobites (Figs.
comprising the topmost beds of the Porkuni RS in North Estonia including the Puhmu core, is poor in any kind of fossils, still the stromatoporoid Clathrodictyon gregale (Nestor) could be mentioned besides rare fragments of brachiopods and bryozoans.
Systematics and phylogenetic implications of the haplosclerid stromatoporoid Newellia mira nov.
1983): Identification of calcified coccoid cyanobacteria forming stromatoporoid stromatolites.
0 m) the limestones contain small stromatoporoid and coral bioherms, intercalating with skeletal grainstones and kerogenous lime-stones in the lower and middle parts of the beds (e.
The oncoids, as large as 2 cm, typically have a bryozoan, stromatoporoid or brachiopod shell fragment as nucleus, encrusted with Girvanella and Rothpletzella.
Carbonates of the studied wells are mainly of coarse-grained bioclastic, crinoidal, brachiopod and stromatoporoid limestones intercalated with marls (Fig.