File:Anomia sp. (fossil jingle shell) (Topsail Island, North Carolina, USA) 2.jpg
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[edit]DescriptionAnomia sp. (fossil jingle shell) (Topsail Island, North Carolina, USA) 2.jpg |
English: Anomia sp. - fossil jingle shell from the upper Cenozoic of North Carolina, USA. (photo provided by Tyler Houck)
Bivalves are bilaterally symmetrical molluscs having two calcareous, asymmetrical shells (valves) - they include the clams, oysters, and scallops. In most bivalves, the two shells are mirror images of each other (the major exception is the oysters). They occur in marine, estuarine, and freshwater environments. Bivalves are also known as pelecypods and lamellibranchiates. Bivalves are sessile, benthic organisms - they occur on or below substrates. Most of them are filter-feeders, using siphons to bring in water, filter the water for tiny particles of food, then expel the used water. The majority of bivalves are infaunal - they burrow into unlithified sediments. In hard substrate environments, some forms make borings, in which the bivalve lives. Some groups are hard substrate encrusters, using a mineral cement to attach to rocks, shells, or wood. The fossil record of bivalves is Cambrian to Recent. They are especially common in the post-Paleozoic fossil record. Classification: Animalia, Mollusca, Bivalvia, Pectinida, Anomiidae Stratigraphy: undetermined upper Cenozoic unit Locality: Topsail Island, North Carolina, USA See info. at: en.wikipedia.org/wiki/Anomia_(bivalve) |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/50393875243/ |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/50393875243. It was reviewed on 14 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
14 October 2020
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current | 03:57, 14 October 2020 | 2,253 × 1,972 (2.23 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50393875243/ with UploadWizard |
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Camera manufacturer | Apple |
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Camera model | iPhone SE |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2.2 |
ISO speed rating | 125 |
Date and time of data generation | 18:41, 11 September 2020 |
Lens focal length | 4.15 mm |
Width | 3,024 px |
Height | 4,032 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 12:55, 28 September 2020 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 18:41, 11 September 2020 |
Meaning of each component |
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APEX shutter speed | 4.9069916613214 |
APEX aperture | 2.2750071245369 |
APEX brightness | 2.7878923766816 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
DateTimeOriginal subseconds | 757 |
DateTimeDigitized subseconds | 757 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
Scene type | A directly photographed image |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 29 mm |
Scene capture type | Standard |
Lens used | iPhone SE back camera 4.15mm f/2.2 |
Date metadata was last modified | 08:55, 28 September 2020 |
Unique ID of original document | 17E1C73B78B7692DA133FD986B6D8032 |