File:Psilophyton forbesii (fossil land plant) (Lower Devonian; Quebec, Canada) 2 (41358778834).jpg
![File:Psilophyton forbesii (fossil land plant) (Lower Devonian; Quebec, Canada) 2 (41358778834).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/Psilophyton_forbesii_%28fossil_land_plant%29_%28Lower_Devonian%3B_Quebec%2C_Canada%29_2_%2841358778834%29.jpg/800px-Psilophyton_forbesii_%28fossil_land_plant%29_%28Lower_Devonian%3B_Quebec%2C_Canada%29_2_%2841358778834%29.jpg?20191207190626)
Original file (3,008 × 2,000 pixels, file size: 4.26 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]DescriptionPsilophyton forbesii (fossil land plant) (Lower Devonian; Quebec, Canada) 2 (41358778834).jpg |
Psilophyton forbesii Andrews et al., 1968 - fossil land plants from the Devonian of Quebec, Canada. (FMNH PP33641, 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. Psilophyton is an early land plant, principally known from the Devonian of Laurentia. The specimens shown here are preserved as carbonized compressions. Classification: Plantae, Tracheophyta, Trimerophytopsida, Trimerophytales, Trimerophytaceae Stratigraphy: unrecorded/undisclosed Locality: unrecorded/undisclosed site in Quebec, Canada (possibly the Gaspe Peninsula) See info. at: <a href="https://en.wikipedia.org/wiki/Psilophyton" rel="nofollow">en.wikipedia.org/wiki/Psilophyton</a> and <a href="https://en.wikipedia.org/wiki/Trimerophytopsida" rel="nofollow">en.wikipedia.org/wiki/Trimerophytopsida</a> |
Date | |
Source | Psilophyton forbesii (fossil land plant) (Lower Devonian; Quebec, Canada) 2 |
Author | James St. John |
Licensing
[edit]![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
- 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 James St. John at https://flickr.com/photos/47445767@N05/41358778834 (archive). It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
7 December 2019
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:06, 7 December 2019 | ![]() | 3,008 × 2,000 (4.26 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
---|---|
Camera model | NIKON D70s |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 11:28, 11 June 2010 |
Lens focal length | 112 mm |
Width | 3,008 px |
Height | 2,000 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 07:33, 13 May 2018 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 11:28, 11 June 2010 |
Meaning of each component |
|
Image compression mode | 4 |
APEX shutter speed | 5.906891 |
APEX aperture | 4.970854 |
APEX exposure bias | 0 |
Maximum land aperture | 4.9 APEX (f/5.46) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 10 |
DateTimeOriginal subseconds | 10 |
DateTimeDigitized subseconds | 10 |
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 | 168 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 200638ad |
Lens used | 18.0-200.0 mm f/3.5-5.6 |
Date metadata was last modified | 03:33, 13 May 2018 |
Unique ID of original document | E99C6CA28377936644CDB36C663535A9 |
IIM version | 32,767 |