File:Dromedary Camel (Camelus dromedarius) (4355606704).jpg
Original file (3,872 × 2,592 pixels, file size: 2.19 MB, MIME type: image/jpeg)
Captions
Summary[edit]
DescriptionDromedary Camel (Camelus dromedarius) (4355606704).jpg |
Sony alpha-300 DSLR, with ~10s exposure using a small LED flash light to illuminate areas selectively. Camels are very cool animals. You'll notice the fangs at the front of the mouth (on the right) that males use for fighting. These fangs are actually modified incisors and the smaller posterior fangs are the actual canines. The other upper incisors are lost in maturity and the upper palate resembles more advanced artiodactyls such as bovids with a toothless upper snout and a bottum jaw filled with large shovel like incisors anteriorly (these aren't visible in this photo). The back molars are rather larger and selenodont (meaning moon-teeth, which refers to the cresent shapes that increase surface area for their wash-board like chewing) as seen in most ungulates. Despite the similarities in dentition with some of the more advanced artiodactyls (the ontogenic reduction of upper incisors and selenodont molars), camels, along with llamas and kin, belong to the suborder Tylopoda, which is the most basal group of extant artiodactyls. This means that pigs, peccaries, hippos, whales, and dolphins are all more closely related to cows, goats and antelopes than camels and other camelids are. If you're not familiar, pigs, peccaries, and hippos have prominent incisors and canines throughout life and molars/premolars that look more like a human than a deer or cow. Thus, tylopods actually do not represent a gradation to the ultimate derived artiodactyl form, they're actually a completely independent lineage that, through convergent evolution, ended up looking like modern artiodactyls in their dental structure. It helps to understand that camelids (along with horses) evolved in North America and were relatively isolated from the Old World, where artiodactyls began their diversification. Thus, camelids and equids became something like the equivalent of bovids and cervids in North America until landmasses moved around and the taxonomic groups became thoroughly mixed across the globe. Last note: you may notice the enamel chipping away on the teeth of this specimen, and that is what happens when you bleach a skull too thoroughly. Wasn't me though. |
Date | |
Source | Dromedary Camel (Camelus dromedarius) |
Author | Dallas Krentzel |
Licensing[edit]
- 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 Dallas Krentzel at https://flickr.com/photos/31867959@N04/4355606704 (archive). It was reviewed on 4 December 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
4 December 2018
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 17:35, 4 December 2018 | 3,872 × 2,592 (2.19 MB) | Luisbrudna (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.
Image title | SONY DSC |
---|---|
Camera manufacturer | SONY |
Camera model | DSLR-A300 |
Exposure time | 10/1 sec (10) |
F-number | f/18 |
ISO speed rating | 100 |
Date and time of data generation | 00:36, 13 February 2010 |
Lens focal length | 26 mm |
Orientation | Normal |
Software used | DSLR-A300 v1.00 |
File change date and time | 00:36, 13 February 2010 |
Y and C positioning | Co-sited |
Exposure Program | Shutter priority |
Exif version | 2.21 |
Date and time of digitizing | 00:36, 13 February 2010 |
Meaning of each component |
|
Image compression mode | 8 |
APEX brightness | −0.13 |
APEX exposure bias | 0 |
Maximum land aperture | 4.34 APEX (f/4.5) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
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 |
Focal length in 35 mm film | 39 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |