Leptaena Temporal range:
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Leptaena rhomboidalis | |
Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Brachiopoda |
Class: | † Strophomenata |
Order: | † Strophomenida |
Family: | † Rafinesquinidae |
Subfamily: | † Leptaeninae |
Genus: | †
Leptaena Dalman, 1828 |
Type species | |
Leptaena rugosa Dalman, 1828
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Species | |
See
Species
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Synonyms | |
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Leptaena is an extinct genus of mid-sized brachiopod that existed from the Dariwilian epoch to the Emsian epoch, [1] [2] though some specimens have been found in strata as late in age as the Tournasian epoch. [1] [3] Like some other Strophomenids, Lepteana were epifaunal, meaning they lived on top of the seafloor, not buried within it, and were suspension feeders. [4]
Leptaena usually have concentric wrinkling and concentric lines on the shell. Leptaena have a concavo-convex profile, and are sometimes Semiquadrate to semielliptical. The Cardinal Process is split in two and the hinge line is straight. [4] Their width is usually greater than their length, like most Strophomenids.
Leptaena fossils have been found on every continent except Antarctica. [3] [5] [6]
Leptaena was a diverse genus, with over 70 recognized species and subgenera. Species in the genus Leptaena include the following. [3] [6] [7] Any synonymous genera to which a given species may belong to are labelled with the synonymous genus in parentheses.
Leptaena Temporal range:
| |
---|---|
![]() | |
Leptaena rhomboidalis | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Brachiopoda |
Class: | † Strophomenata |
Order: | † Strophomenida |
Family: | † Rafinesquinidae |
Subfamily: | † Leptaeninae |
Genus: | †
Leptaena Dalman, 1828 |
Type species | |
Leptaena rugosa Dalman, 1828
| |
Species | |
See
Species
| |
Synonyms | |
|
Leptaena is an extinct genus of mid-sized brachiopod that existed from the Dariwilian epoch to the Emsian epoch, [1] [2] though some specimens have been found in strata as late in age as the Tournasian epoch. [1] [3] Like some other Strophomenids, Lepteana were epifaunal, meaning they lived on top of the seafloor, not buried within it, and were suspension feeders. [4]
Leptaena usually have concentric wrinkling and concentric lines on the shell. Leptaena have a concavo-convex profile, and are sometimes Semiquadrate to semielliptical. The Cardinal Process is split in two and the hinge line is straight. [4] Their width is usually greater than their length, like most Strophomenids.
Leptaena fossils have been found on every continent except Antarctica. [3] [5] [6]
Leptaena was a diverse genus, with over 70 recognized species and subgenera. Species in the genus Leptaena include the following. [3] [6] [7] Any synonymous genera to which a given species may belong to are labelled with the synonymous genus in parentheses.