Trigonioida

Information about Trigonioida

Trigoniacea

Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Subclass:	Palaeoheterodonta
Order:	Trigonioida Dall, 1889
Superfamily:	Trigoniacea Lamarck

Families

Trigoniidae
Myophoriidae

The superfamily Trigoniacea are medium-sized saltwater clams, marine bivalve mollusks. This superfamily is the sole representative of the order Trigonioida. Within the fossil record the occurance of this superfamily is widespread, from the Devonian Period to Recent.

The diagnostic feature for the superfamily is the unique and complex dentition of the shell, (i.e. the interior hinge teeth that articulate the two valves). The dentition is particularly elaborate within the family Trigoniidae.

The Trigoniacea contain the following families:

Myophoriidae
Trigoniidae

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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Mollusca
Linnaeus, 1758

Classes

Caudofoveata
Aplacophora
Polyplacophora
Monoplacophora
Bivalvia
Scaphopoda
Gastropoda
Cephalopoda
† Rostroconchia
† Helcionelloida
† ?Bellerophontida
The molluscs
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Bivalvia
Linnaeus, 1758

Subclasses

Anomalosdesmata
Cryptodonta
Heterodonta
Paleoheterodonta
Palaeotaxodonta
Pteriomorphia
and see text
Bivalves are mollusks belonging to the class Bivalvia.
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Paleoheterodonta

Orders

†Trigonioida
Unionoida

Paleoheterodonta is a mollusc subclass of the Bivalvia. It contains the extant order Unionoida. (freshwater mussels) and the prehistoric Trigonioida.
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Jean-Baptiste Pierre Antoine de Monet, Chevalier de Lamarck (August 1, 1744 – December 18, 1829) was a French soldier, naturalist, academic and an early proponent of the idea that evolution occurred and proceeded in accordance with natural laws.
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family (Latin: familia, plural familiae) is a rank, or a taxon in that rank. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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Trigoniidae
Lamarck

Common Genera

Trigonia
Myophorella
Laevitrigonia
Orthotrigonia

The Trigoniidae
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clam is a kind of mollusc that has a shell divided into two pieces called valves, in other words, a clam is a bivalve mollusc.

The word "clam" has no real taxonomic significance in biology. However in the USA the word can sometimes be used to mean any bivalve mollusc.
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Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine geology. As a noun it can be a term for a certain kind of navy, or those enlisted in such a navy.
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order (Latin: ordo, plural ordines) is a rank between class and family (termed a taxon at that rank). The superorder is a rank between class and order. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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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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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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Period and periodic may refer to:

An interval of time that an event, chain of events, instance or happening, takes place within. It is measured between a start point and an end point and generally repeats (which is where the term period came to describe a

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The Holocene epoch is a geological period, which began approximately 11,550 calendar years BP (about 9600 BC) and continues to the present. The Holocene is part of the Neogene and Quaternary periods.
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Dentition is the development of teeth and their arrangement in the mouth.

All mammals except the monotremes, the edentates, the pangolins, and the cetaceans have up to four distinct types of teeth, with a maximum number for each.
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Trigoniidae
Lamarck

Common Genera

Trigonia
Myophorella
Laevitrigonia
Orthotrigonia

The Trigoniidae
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Trigoniidae
Lamarck

Common Genera

Trigonia
Myophorella
Laevitrigonia
Orthotrigonia

The Trigoniidae
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Trigonioida

Information about Trigonioida