January 27, 2016 02:03PM
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Registered: 17 years ago
Posts: 1,019
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Lee Olsen Wrote:
-------------------------------------------------------
> DDeden Wrote:
> --------------------------------------------------
> -----
>
> > Yes, typical modern bird perching, during
> sleep,
> > tweeting and prey/food scanning, foot with
> locking
> > tendons to secure a good tensional grip.
>
> > Not dinobird perching.
>
> Did you not bring up modern birds (owls and
> hoatzin), along with modern linemen and sloths?
> None of which are dino perching birds.
There are no modern animals identical to dino-birds. Using other modern species to show parallels in traits is hardly novel.
Compressional perching is used by some monkeys, but monkeys are not dino-birds either.
>
> > Zs (et al) only perched
>
> The data for that claim is?
When you feel the need to chop meaningful sentences into meaningless fragments, perhaps it is time to throw In the towel. The rear toe is of much less concern to me than the long bony fleshy tail which provided counterbalancing while perched. As I stated earlier, they may not have even used the rear toe, since they possibly used only the perching toe above branch and the 2 laterals beneath in a pincer movement. Either way, the long bony fleshy tail was critical mass in compressional perching. I don't know of any bipeds with such a tail today, certainly no birds they have only a stubby pygostyle somewhat similar to an apes' tailbone.
>
> Here is a dinobird again, notice the tracks.
Your link: "[
www.theguardian.com]; says nothing about Zs, does it? Does it mention "dino-bird"? The picture's caption: "a reconstruction of the oldest known bird"
Are you trying to pull the feathers over our eyes?
>
> It looks to me that it could perch with that rear
> facing toe.
>
> While the depiction above for Zs doesn't show the
> tracks, it certainly doesn't show the rear toe
> touching the ground either, as in the case of
> perchers from the Cretaceous. It just doesn't look
> like the rear toe would be much use in a tree or
> fern, way to short IMO.
>
>
> DD "Remember I referred to it (Zs's) as a perching
> claw."
>
> Yes, but birds don't perch with the claw portion
> of the foot, they perch (wrap around) with
> flexible joints of the toes. This does not fit the
> Zs configuration, front or rear.
That's because modern birds rely on tension. Dino-birds relied upon compression. [Sloths rely on tensional hanging but their claws are compressing the branch above, so did Zs. ]
DDeden
Subject |
Author |
Posted |
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Khazar-khum |
January 05, 2016 08:34PM |
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cicely |
January 06, 2016 11:41AM |
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January 11, 2016 11:19AM |
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DDeden |
January 13, 2016 06:30PM |
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Lee Olsen |
January 14, 2016 12:31PM |
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DDeden |
January 16, 2016 03:18PM |
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Khazar-khum |
January 16, 2016 03:53PM |
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Jammer |
January 17, 2016 07:43AM |
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Lee Olsen |
January 18, 2016 09:10AM |
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Lee Olsen |
January 18, 2016 09:42AM |
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Lee Olsen |
January 18, 2016 08:57AM |
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DDeden |
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Lee Olsen |
January 21, 2016 09:57AM |
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DDeden |
January 21, 2016 05:00PM |
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Lee Olsen |
January 21, 2016 10:41PM |
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DDeden |
January 22, 2016 11:28AM |
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DDeden |
January 22, 2016 11:28AM |
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Lee Olsen |
February 29, 2016 11:15AM |
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DDeden |
February 29, 2016 06:46PM |
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Lee Olsen |
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Lee Olsen |
July 18, 2016 08:33AM |
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DDeden |
July 22, 2016 12:25PM |
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Lee Olsen |
July 22, 2016 12:33PM |
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DDeden |
July 23, 2016 12:42PM |
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Lee Olsen |
July 23, 2016 07:08PM |
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DDeden |
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Lee Olsen |
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DDeden |
July 27, 2016 04:46PM |
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Lee Olsen |
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DDeden |
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Lee Olsen |
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DDeden |
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Lee Olsen |
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Lee Olsen |
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DDeden |
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Khazar-khum |
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Lee Olsen |
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DDeden |
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Khazar-khum |
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DDeden |
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Rick Baudé |
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Khazar-khum |
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Lee Olsen |
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DDeden |
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Lee Olsen |
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DDeden |
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Lee Olsen |
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Lee Olsen |
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Lee Olsen |
July 22, 2016 01:24PM |
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DDeden |
January 22, 2016 12:51PM |
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Lee Olsen |
January 22, 2016 07:19PM |
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Khazar-khum |
January 22, 2016 08:05PM |
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Lee Olsen |
January 23, 2016 08:27AM |
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Khazar-khum |
January 25, 2016 03:58PM |
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Rick Baudé |
January 25, 2016 09:12PM |
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Khazar-khum |
January 26, 2016 05:01PM |
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DDeden |
January 23, 2016 02:44PM |
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Lee Olsen |
January 23, 2016 10:48PM |
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DDeden |
January 25, 2016 06:59PM |
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Lee Olsen |
January 26, 2016 11:53AM |
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DDeden |
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Lee Olsen |
January 27, 2016 08:19PM |
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Khazar-khum |
January 28, 2016 02:37PM |
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DDeden |
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Lee Olsen |
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DDeden |
January 31, 2016 05:23PM |
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Khazar-khum |
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DDeden |
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Lee Olsen |
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Rick Baudé |
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Rick Baudé |
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Rick Baudé |
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DDeden |
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Rick Baudé |
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DDeden |
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Rick Baudé |
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DDeden |
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Rick Baudé |
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Rick Baudé |
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Khazar-khum |
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DDeden |
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DDeden |
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Rick Baudé |
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DDeden |
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Rick Baudé |
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DDeden |
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Khazar-khum |
January 31, 2016 09:05PM |
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DDeden |
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Rick Baudé |
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Khazar-khum |
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DDeden |
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Jammer |
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Lee Olsen |
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DDeden |
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Lee Olsen |
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DDeden |
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DDeden |
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Lee Olsen |
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DDeden |
January 29, 2016 04:56PM |
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Lee Olsen |
January 29, 2016 05:15PM |
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DDeden |
January 30, 2016 05:41PM |
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Lee Olsen |
January 31, 2016 03:46PM |
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DDeden |
January 31, 2016 05:35PM |
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Lee Olsen |
January 31, 2016 11:21PM |
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DDeden |
February 02, 2016 03:26PM |
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Lee Olsen |
February 02, 2016 05:10PM |
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DDeden |
February 02, 2016 07:12PM |
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Lee Olsen |
February 02, 2016 09:51PM |
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DDeden |
February 03, 2016 07:07PM |
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Lee Olsen |
February 03, 2016 11:03PM |
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Jammer |
February 01, 2016 01:31PM |
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DDeden |
February 01, 2016 07:49PM |
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Lee Olsen |
February 01, 2016 09:37PM |
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Jammer |
February 02, 2016 12:17PM |
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DDeden |
February 02, 2016 07:21PM |
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Jammer |
February 03, 2016 10:53AM |
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DDeden |
February 02, 2016 05:48PM |
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DDeden |
February 02, 2016 07:18PM |
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Lee Olsen |
February 02, 2016 10:26PM |
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Jammer |
February 03, 2016 11:00AM |
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Lee Olsen |
February 03, 2016 01:56PM |
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DDeden |
February 03, 2016 07:19PM |
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Lee Olsen |
February 03, 2016 11:51PM |
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DDeden |
February 03, 2016 07:12PM |
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Lee Olsen |
February 03, 2016 11:21PM |
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DDeden |
February 04, 2016 07:20PM |
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Lee Olsen |
February 04, 2016 10:31PM |
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DDeden |
February 06, 2016 03:51PM |
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Lee Olsen |
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DDeden |
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Rick Baudé |
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DDeden |
January 31, 2016 05:43PM |
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Lee Olsen |
January 31, 2016 09:52PM |
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Lee Olsen |
February 01, 2016 06:46PM |
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Jammer |
February 02, 2016 12:18PM |
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DDeden |
February 02, 2016 07:42PM |
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Lee Olsen |
February 03, 2016 12:42AM |
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DDeden |
February 04, 2016 07:25PM |
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Lee Olsen |
February 04, 2016 10:45PM |
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DDeden |
February 06, 2016 03:56PM |
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DDeden |
February 02, 2016 03:22PM |
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Lee Olsen |
February 02, 2016 04:42PM |
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DDeden |
February 02, 2016 07:39PM |
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Rick Baudé |
February 02, 2016 09:43PM |
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Lee Olsen |
February 02, 2016 11:37PM |
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DDeden |
February 04, 2016 07:42PM |
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Allan Shumaker |
February 04, 2016 10:13PM |
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DDeden |
February 08, 2016 05:22PM |
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Lee Olsen |
February 04, 2016 11:42PM |
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DDeden |
February 06, 2016 04:51PM |
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Lee Olsen |
February 06, 2016 05:15PM |
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Lee Olsen |
February 06, 2016 06:17PM |
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DDeden |
February 07, 2016 05:50PM |
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Lee Olsen |
February 07, 2016 06:16PM |
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DDeden |
July 18, 2016 12:11PM |
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DDeden |
February 07, 2016 05:46PM |
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Lee Olsen |
February 07, 2016 06:07PM |
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DDeden |
July 18, 2016 12:13PM |
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Lee Olsen |
July 22, 2016 11:43AM |
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DDeden |
July 22, 2016 12:17PM |
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Lee Olsen |
July 27, 2016 08:24PM |
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DDeden |
February 08, 2016 02:51PM |
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Lee Olsen |
February 08, 2016 04:13PM |
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DDeden |
February 08, 2016 05:17PM |
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Lee Olsen |
February 08, 2016 07:41PM |
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DDeden |
February 09, 2016 06:28PM |
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Lee Olsen |
February 09, 2016 07:59PM |
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DDeden |
February 10, 2016 01:25PM |
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Jammer |
February 10, 2016 01:37PM |
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DDeden |
February 11, 2016 04:33PM |
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Lee Olsen |
February 11, 2016 05:10PM |
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DDeden |
July 18, 2016 12:10PM |
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Lee Olsen |
July 23, 2016 07:01PM |
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DDeden |
July 24, 2016 12:40PM |
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Lee Olsen |
July 24, 2016 02:58PM |
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DDeden |
July 27, 2016 04:45PM |
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Lee Olsen |
July 27, 2016 07:15PM |
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DDeden |
July 28, 2016 10:20AM |
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Lee Olsen |
July 29, 2016 05:15PM |
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Lee Olsen |
February 10, 2016 04:26PM |
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DDeden |
February 11, 2016 04:54PM |
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Lee Olsen |
February 11, 2016 05:49PM |
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DDeden |
February 28, 2016 05:49PM |
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Lee Olsen |
June 15, 2016 08:22AM |
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DDeden |
July 10, 2016 01:11PM |
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DDeden |
March 01, 2016 02:42PM |
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Lee Olsen |
March 01, 2016 03:56PM |
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DDeden |
June 14, 2016 06:30PM |
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Lee Olsen |
June 15, 2016 09:12AM |
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DDeden |
June 15, 2016 06:37PM |
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Lee Olsen |
June 15, 2016 10:20PM |
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DDeden |
June 17, 2016 01:03PM |
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Lee Olsen |
June 21, 2016 04:27PM |
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DDeden |
June 17, 2016 01:36PM |
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Lee Olsen |
June 21, 2016 05:07PM |
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DDeden |
July 05, 2016 04:41PM |
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Khazar-khum |
July 05, 2016 10:16PM |
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DDeden |
July 07, 2016 03:44PM |
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Lee Olsen |
July 08, 2016 10:22AM |
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Khazar-khum |
July 08, 2016 03:10PM |
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Lee Olsen |
July 08, 2016 06:56PM |
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DDeden |
July 09, 2016 11:50AM |
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Lee Olsen |
July 10, 2016 09:58AM |
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DDeden |
July 10, 2016 01:09PM |
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Lee Olsen |
July 11, 2016 07:58AM |
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DDeden |
July 11, 2016 04:22PM |
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DDeden |
July 10, 2016 02:24PM |
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DDeden |
July 11, 2016 04:25PM |
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Lee Olsen |
July 12, 2016 07:53AM |
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DDeden |
July 12, 2016 11:25AM |
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Lee Olsen |
July 13, 2016 07:21AM |
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DDeden |
July 15, 2016 11:16AM |
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Khazar-khum |
July 15, 2016 01:59PM |
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DDeden |
July 17, 2016 01:13PM |
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Lee Olsen |
July 16, 2016 07:39AM |
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Khazar-khum |
July 17, 2016 11:35AM |
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DDeden |
July 17, 2016 01:14PM |
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DDeden |
July 17, 2016 01:14PM |
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Lee Olsen |
July 18, 2016 08:13AM |
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DDeden |
July 18, 2016 12:05PM |
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Lee Olsen |
July 22, 2016 12:44PM |
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DDeden |
July 23, 2016 12:37PM |
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Lee Olsen |
July 23, 2016 06:52PM |
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Khazar-khum |
July 24, 2016 02:57PM |
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Rick Baudé |
July 24, 2016 08:29PM |
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DDeden |
July 29, 2016 11:54AM |
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Khazar-khum |
July 29, 2016 01:34PM |
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DDeden |
July 30, 2016 12:11PM |
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Lee Olsen |
July 30, 2016 12:59PM |
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Lee Olsen |
July 29, 2016 05:01PM |
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DDeden |
July 30, 2016 12:14PM |
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Lee Olsen |
July 30, 2016 01:05PM |
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DDeden |
July 09, 2016 11:48AM |
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DDeden |
June 17, 2016 01:12PM |
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Hermione |
July 30, 2016 05:17PM |
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