Leptaena acuticuspidata Brachiopod.jpg
By Dpaul7
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Leptaena acuticuspidata Brachiopod
Bois d'Arc Formation (overlays the Haragan) of Oklahoma
TIME PERIOD: Lower Devonian (359-383 Million Years Ago)
Leptaena, genus of extinct brachiopods (lamp shells) commonly found as fossils in Ordovician to Lower Carboniferous sedimentary rocks (between 488 million and 318 million years old). The very distinctive shell of Leptaena is characterized by its wrinkled ornamentation and fine linear markings. Leptanea (Dalman 1828) is a flat, Strophomenid type shell that develops a defined lip. This prolific and long lived genera is easily recognizable and can be found in rocks from the Ordovician through the Carboniferous. Strophomenata is an extinct class of brachiopods in the subphylum Rhynchonelliformea.
Kingdom: Animalia
Phylum: Brachiopoda
Class: †Strophomenata
Order: †Strophomenata
Family: †Rafinesquinidae
Genus: †Leptaena
Species: †acuticuspidata
Photo Information
- Taken with Canon Canon PowerShot SX120 IS
- Focal Length 8.2 mm
- Exposure Time 1/60
- f Aperture f/3.2
- ISO Speed 80
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