Stromatoporoidea

Stromatoporoidea
Scientific classification
Kingdom:Animalia
Phylum:Porifera
Class:Demospongea
Order:Stromatoporoidea
Families


See text.
Stromatoporoidea is an order of colonial aquatic invertebrates that until recently was believed to have gone extinct in the Devonian. The group was previously thought to be related to the corals and placed in the phylum Cnidaria. It is now thought to belong to the sponges (Porifera). There are numerous fossil forms, dating from the Cambrian to the Cretaceous periods, with spherical, branching or encrusting skeletons of lime.

The living members of this order are recognized by the zoological society as sclerosponges but are identical to, what the paleontological community has identified as stromatoporoids. It is poor communication between these two groups that has caused inproper naming of this species and some confusion. Today stromatoporoids have been relegated to a marginal existence in areas intolerable to other reefing benthos.
Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Porifera
Grant in Todd, 1836

Classes
Calcarea
Hexactinellida
Demospongiae
The sponges or poriferans (from Latin "pore" and "to bear") are animals of the phylum Porifera. Porifera translates to "Pore-bearer".
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Demospongiae
Sollas, 1885

Subclasses

Homoscleromorpha
Tetractinomorpha
Ceractinomorpha
See text for orders.

The Demospongiae are the largest class in the phylum Porifera.
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Invertebrate is an English word that describes any animal without a spinal column. The group includes 97% of all animal species — all animals except those in the Chordate subphylum Vertebrata (fish, reptiles, amphibians, birds and mammals).
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extinction is the cessation of existence of a species or group of taxa, reducing biodiversity. The moment of extinction is generally considered to be the death of the last individual of that species (although the capacity to breed and recover may have been lost before this point).
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Devonian is a geologic period of the Paleozoic era spanning from roughly 416 to 359 million years ago. It is named after Devon, England, where rocks from this period were first studied.
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Corals are marine animals from the class Anthozoa and exist as small sea anemone-like polyps, typically in colonies of many identical individuals. The group includes the important reef builders that are found in tropical oceans, which secrete calcium carbonate to form a hard
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Cnidaria
Hatschek, 1888

Subphylum/Classes[1]

Anthozoa — corals and sea anemones
Medusozoa:[2]
:Cubozoa — sea wasps or box jellyfish

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Porifera
Grant in Todd, 1836

Classes
Calcarea
Hexactinellida
Demospongiae
The sponges or poriferans (from Latin "pore" and "to bear") are animals of the phylum Porifera. Porifera translates to "Pore-bearer".
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For other uses of the term, see Fossil (disambiguation)


FOSSIL is a standard for allowing serial communication for telecommunications programs under the DOS operating system.
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The Cambrian is a major division of the geologic timescale that begins about 542 ± 1.0 Ma (million years ago) at the end of the Proterozoic eon and ended about 488.3 ± 1.7 Ma with the beginning of the Ordovician period (ICS, 2004).
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The Cretaceous Period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic Period (i.e. from 145.5 ± 4.0 million years ago (Ma)) to the beginning of the Paleocene epoch of the Tertiary Period (about 65.5 ± 0.3 Ma).
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Lime is a general term for various naturally occurring minerals and materials derived from them, in which carbonates, oxides and hydroxides of calcium predominate.
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Zoology (from Greek: ζῴον, zoion, "animal"; and λόγος, logos, "knowledge") is the biological discipline which involves the study of animals.
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Sclerosponges are sponges with a soft body that covers a hard, often massive skeleton made of calcium carbonate, either aragonite or calcite. Because of their long life span (500-1,000 years) it is thought that analysis of the aragonite skeletons of these sponges could extend data
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Palaeontology redirects here. For the scientific journal, see Palaeontology (journal).


Paleontology, palaeontology or palæontology (from Greek: paleo, "ancient"; ontos
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Coral reefs are aragonite structures produced by living organisms, found in shallow, tropical marine waters with little to no nutrients in the water. High nutrient levels such as that found in runoff from agricultural areas can harm the reef by encouraging the growth of algae.
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Benthos are the organisms which live on, in, or near the seabed, also known as the benthic zone.[1] Although the term derived from the Greek for "depths of the sea"<ref name="caml" />, the term is also used in freshwater biology to refer to organisms at
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