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File:Microthyridina lagenalis (fossil brachiopod) (Upper Cornbrash Formation, Middle Jurassic; Latton Quarry, Wiltshire County, England) 1.jpg

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English: Microthyridina lagenalis (Schlotheim, 1820) - fossil brachiopod from the Jurassic of Britain. (view of dorsal valve; ~3.25 centimeters tall)

Brachiopods are sessile, benthic, filter-feeding, marine invertebrates. They first appear in Cambrian rocks and were abundant in Earth's oceans throughout the Paleozoic. They were also common in Mesozoic oceans, but are scarce in modern oceanic biotas. Brachiopods have two shells, called valves, that are usually calcareous (made of calcite - CaCO3 - calcium carbonate). Each shell of a brachiopod is bilaterally symmetrical, unlike each shell of a bivalve (clam).

Classification: Animalia, Brachiopoda, Articulata (a.k.a. Rhynchonelliformea), Terebratulida, Zeilleriidae

Stratigraphy: Macrocephalites herveyi ammonite zone (Macrocephalites macrocephalus ammonite zone), Upper Cornbrash Formation, lower Callovian Stage, upper Middle Jurassic, ~165 Ma

Locality: Latton Quarry, northeastern side of Highway A419, ~1.5 kilometers east-southeast of Cerney Wick & ~5 kilometers east-northeast of Ashton Keynes, northern Wiltshire County, southern England (~51° 39' 33" North latitude, ~01° 52' 02" West longitude)
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Source https://www.flickr.com/photos/47445767@N05/49624343803/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49624343803 (archive). It was reviewed on 6 March 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

6 March 2020

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current15:27, 6 March 2020Thumbnail for version as of 15:27, 6 March 20201,300 × 1,813 (1.23 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/49624343803/ with UploadWizard

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