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SKULLS
Dec 8, 2013 7:48:05 GMT -9
Post by warsaw on Dec 8, 2013 7:48:05 GMT -9
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SKULLS
Mar 21, 2014 10:49:56 GMT -9
Post by warsaw on Mar 21, 2014 10:49:56 GMT -9
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SKULLS
Mar 30, 2014 3:56:09 GMT -9
Post by warsaw on Mar 30, 2014 3:56:09 GMT -9
A sloth bear skull, Melursus ursinus. Specimen LDUCZ-Z1637. (C) UCL Grant Museum  naturalsciencecollections.wordpress.com |
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SKULLS
Apr 11, 2014 4:01:47 GMT -9
Post by warsaw on Apr 11, 2014 4:01:47 GMT -9
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SKULLS
Oct 17, 2014 5:08:29 GMT -9
Post by warsaw on Oct 17, 2014 5:08:29 GMT -9
 World record skull size Kamchatka Brown Bear at 30 11/16 inches Greatest length of skull 18 13/16"=47,78 cm Greatest width of skull =11 14/16"=30,16 cm Source www.scirecordbook.org |
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SKULLS
Oct 30, 2014 4:15:34 GMT -9
Post by warsaw on Oct 30, 2014 4:15:34 GMT -9
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SKULLS
Oct 31, 2014 8:40:57 GMT -9
Post by warsaw on Oct 31, 2014 8:40:57 GMT -9
Allometric Growth Pattern of Skull on Brown Bear (Ursus arctos Linnaeus, 1758) of the Alborz Mountain Bagher NEZAMI1* Soheil EAGDARI2 1 Faculty of Environment and Natural Resources, University of Environment (UoE), Karaj, Iran 2 College of Natural Resources, University of Tehran, Karaj, Iran This study was conducted to investigate the allometric growth pattern in the skull of both sexes of Iranian brown bear (Ursus arctos) in the Alborz Mountains. Allometric parameters were obtained from 2D pictures of skulls using the software ImageJ and allometric growth pattern was calculated as a power function of total length using non-transformed data. Allometric growth pattern also showed that difference between males and females during their ontogenic growth of skull. Results showed that during development of skull parts from Immature to adult in male and female, similar grow pattern will continue to a certain age, after thet sexual dimorphism appear. Growth pattern is a factor for the sexual dimorphism differences. Different charts shows more consolidate in different parts of the male skull. According to the results Males in different parts of the skull is stronger whereas have shown more length, narrower and weaker in females. "... The skull shape pattern in female was found almost similar to that of immature, whereas the male's skull growth pattern showed some differences in the zygomatic arch, frontal bone, nasal bone, and dental row length. [28] pointed out that occurrence of sexual dimorphism at a certain age, possibly coincide with their mature age that is about 4 years for females and later in males. In second phase of growth patterns i.e. in mature age, the skull’s shape continues to changes in brown bear particularly in males. In most of mammals, growth of skull is stopped coincide with completing maturity and stopping the growth of other parts of body [1; 2; 3; 27] that our results did not show similar phenomena in brown bear.
In conclusion, differences in growth pattern between males and female were observed during second phase showing that the skull of male become bigger and stronger than that of female for intraspecific comptition. In addition, positive growth patterns of the zygomatic arch, occipital bone and sagital crest in both gender can provide more space for inserting muscles. Female's skull often tend to be homogeneous, thin and longer similar to immature one. Based on the results, the parietal region of skull changes from circle-shaped in immature to cube-shaped in matures..." nobel.gen.tr/Makaleler/JABS-Issue%203-c3e2402a06cf4b419b297afdd275f56b.pdf |
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SKULLS
Nov 3, 2014 11:45:53 GMT -9
Post by warsaw on Nov 3, 2014 11:45:53 GMT -9
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SKULLS
Nov 21, 2014 14:14:17 GMT -9
Post by warsaw on Nov 21, 2014 14:14:17 GMT -9
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SKULLS
Dec 1, 2014 14:06:33 GMT -9
Post by warsaw on Dec 1, 2014 14:06:33 GMT -9
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SKULLS
Dec 7, 2014 9:04:58 GMT -9
Post by warsaw on Dec 7, 2014 9:04:58 GMT -9
 New World record skull size Kamchatka Brown Bear at 30 11/16 inches Greatest length of skull 18 13/16"=47,78 cm Greatest width of skull =11 14/16"=30,16 cm Source www.scirecordbook.org*Greatest length of the skull with lower jaw |
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SKULLS
Dec 18, 2014 7:40:14 GMT -9
Post by mfunchess on Dec 18, 2014 7:40:14 GMT -9
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SKULLS
Feb 12, 2015 0:24:47 GMT -9
Post by warsaw on Feb 12, 2015 0:24:47 GMT -9
Bones Don't Lie: Evidence of a Bear's Perseverance Through Trauma January 22, 2015 Posted by: Michael Fitz On July 1, 2014, bear 130 Tundra was found dead near Brooks River. Since this bear was well known by rangers and the public, her skull was collected and cleaned so it could be used for educational and interpretive programs. As it turns out, Tundra’s skull reveals a biography of trauma she apparently suffered through several years before. Bones don’t lie. They tell the story of pain and healing. As a yearling cub, this bear apparently persevered through potentially traumatic damage to her skull. Her skull tells the story. Every skeleton, including those of humans, records a “bone biography.” Bones change size and shape in response to forces placed on them. Stress from repeated use can deteriorate or thicken bones. As fractures heal, bones record a scar of the event. It’s no different for animals. A fracture will be recorded in the bone as it heals. In late June 2008, when 130 Tundra was a yearling cub, she sustained an obvious injury to the left side of her head. No one witnessed the cause of the injury, but it did produce a distinctive scar that allowed us to easily identify the bear. However, in 130’s case the fur on her face and head may have hidden a more traumatic injury than a simple, bloody flesh wound.  www.nps.gov/katm/blogs/Bones-Dont-Lie-Evidence-of-a-Bears-Perseverance-Through-Trauma.htmMore photos www.flickr.com/photos/katmainps/ |
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SKULLS
Mar 20, 2015 13:52:19 GMT -9
Post by warsaw on Mar 20, 2015 13:52:19 GMT -9
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SKULLS
Apr 2, 2015 2:48:35 GMT -9
Post by warsaw on Apr 2, 2015 2:48:35 GMT -9
Kodiak  |
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