File:Embryonic Maiasaura emerges from egg - reconstructed cast - Museum of the Rockies - 2013-07-08.jpg
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[edit]DescriptionEmbryonic Maiasaura emerges from egg - reconstructed cast - Museum of the Rockies - 2013-07-08.jpg |
English: A cast of an embryonic Maiasaur emerging from an egg, on display at the Museum of the Rockies in Bozeman, Montana.
Maiasaura were a very large duck-billed dinosaur, and lived (as far as known) exclusively in Montana. They were first discovered near Choteau, Montana, in 1979 in the Two Medicine Formation. Marion Brandvold found a huge nest of eggs, hatchlings, and juveniles -- and suddenly a lot of interest was expressed in the dusty, ignored, out-of-the-way, unexciting Two Medicine Formation. (Thereafter, a wide number of new dinosaur species were found there!) More than 200 Maiasaura specimens have been unearthed, and it is one of the best-described dinosaurs today. We know they laid a huge number of eggs in nests, that their nests were close together, that they used rotting vegetation to incubate their eggs, and that they nutured their young for at least a year (maybe two). Hatchlings were unable to walk for several months, and there is clear evidence that adults brought food to the next for the young to eat. Maiasaura moved in large herds, too. |
Date | |
Source | https://www.flickr.com/photos/23165290@N00/9325346610/ |
Author | Tim Evanson |
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This image was originally posted to Flickr by Tim Evanson at https://www.flickr.com/photos/23165290@N00/9325346610. It was reviewed on 6 August 2013 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
6 August 2013
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:37, 6 August 2013 | 3,000 × 1,987 (5.25 MB) | Tim1965 (talk | contribs) | {{Information |Description ={{en|1=A cast of an embryonic Maiasaur emerging from an egg, on display at the Museum of the Rockies in Bozeman, Montana. Maiasaura were a very large duck-billed dinosaur, and lived (as far as known) exclusively in Monta... |
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Metadata
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D5100 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5.6 |
ISO speed rating | 3,200 |
Date and time of data generation | 15:38, 8 July 2013 |
Lens focal length | 55 mm |
Orientation | Normal |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | Adobe Photoshop CS5 Windows |
File change date and time | 21:30, 19 July 2013 |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 15:38, 8 July 2013 |
APEX shutter speed | 5.906891 |
APEX aperture | 4.970854 |
APEX exposure bias | 0 |
Maximum land aperture | 5 APEX (f/5.66) |
Subject distance | 0.71 meters |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 80 |
DateTimeOriginal subseconds | 80 |
DateTimeDigitized subseconds | 80 |
Color space | Uncalibrated |
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 | 82 mm |
Scene capture type | Standard |
Scene control | High gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 3563291 |
Lens used | 18.0-55.0 mm f/3.5-5.6 |
Rating (out of 5) | 0 |
Date metadata was last modified | 17:30, 19 July 2013 |
Unique ID of original document | E153DCA72EBA722D4C3428373240464D |
IIM version | 3,012 |