File:Chaleuria cirrosa fossil land plant (Lower Devonian; New Brunswick, southeastern Canada) 1 (15518602081).jpg
Original file (2,269 × 1,992 pixels, file size: 1.83 MB, MIME type: image/jpeg)
This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionChaleuria cirrosa fossil land plant (Lower Devonian; New Brunswick, southeastern Canada) 1 (15518602081).jpg |
Chaleuria cirrosa Andrews et al., 1974 fossil land plant from the Lower Devonian of New Brunswick, southeastern Canada. (public display, FMNH PP 33636, Field Museum of Natural History, Chicago, Illinois, USA) Plants are multicellular, photosynthetic eucaryotes. The oldest known land plant body fossils are Silurian in age. Fossil root traces of land plants are known back in the Ordovician. The Devonian was the key time interval during which land plants flourished and Earth experienced its first “greening” of the land. The earliest land plants were small and simple and probably remained close to bodies of water. By the Late Devonian, land plants had evolved large, tree-sized bodies and the first-ever forests appeared. Chaleuria is the oldest known plant that has heterospory - its sporangia produced spores of two discrete size ranges. Heterospory became a widespread reproductive feature in land plants by the Late Devonian. Chaleuria was initially interpreted as a progymnosperm (see examples elsewhere in this photo album), but it has since been considered to have uncertain affinities (Plantae incertae sedis). |
Date | |
Source | Chaleuria cirrosa fossil land plant (Lower Devonian; New Brunswick, southeastern Canada) 1 |
Author | James St. John |
Licensing
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15518602081. It was reviewed on 6 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 May 2015
Items portrayed in this file
depicts
some value
11 June 2010
image/jpeg
e7814303c8889f8ca27cffbbfe3cd6bbf12aeb14
1,917,406 byte
1,992 pixel
2,269 pixel
0.0166666666666667 second
70 millimetre
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:04, 6 May 2015 | 2,269 × 1,992 (1.83 MB) | Natuur12 | Transferred from Flickr via Flickr2Commons |
File usage
The following 2 pages use this file:
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | NIKON CORPORATION |
---|---|
Camera model | NIKON D70s |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5 |
Date and time of data generation | 11:19, 11 June 2010 |
Lens focal length | 70 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 21:49, 12 October 2014 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 11:19, 11 June 2010 |
Meaning of each component |
|
Image compression mode | 4 |
Exposure bias | 0 |
Maximum land aperture | 4.6 APEX (f/4.92) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 80 |
DateTimeOriginal subseconds | 80 |
DateTimeDigitized subseconds | 80 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 105 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Supported Flashpix version | 1 |
Image width | 2,269 px |
Image height | 1,992 px |
Date metadata was last modified | 17:49, 12 October 2014 |