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11-03-2019, 12:31 PM   #451
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Great minds think alike

time to relax

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11-03-2019, 12:32 PM - 2 Likes   #452
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QuoteOriginally posted by Deesquared Quote
I did not know that! How interesting.
FYI:

Horses, rhinos and tapirs are in the PERISSODACTYLA, commonly called odd-toed ungulates. There were other types in the past that have gone extinct.

Hippos, gazelle, antelope, cattle, giraffe, pigs, peccaries, camels, goats, sheep are in the ARTIODACTYLA, commonly called even-toed ungulates, or cloven-hoofed ungulates.

A critical feature of this group is an astragalus (= ankle bone) that has a joint at both ends, a feature unique to artiodactyls. It effectively gives their hind legs an extra segment. Other mammal hind legs have three segments = femur to the knee, tibia + fibula to the ankle, foot to the end of the toes. Artiodactyls have femur - tibia/fibula - astragalus - rest of the foot. The segment formed by the astragalus is very short, It's tricky to describe how it works, easier with a diagram, but basically the astragalus provides a "low gear" to "high gear" shift when the animal is running. It probably enables the springing-leaping ability of smaller artiodactyls, and also enables a faster acceleration from a standstill to full speed.

In the "rise of mammals" following extinction of the dinosaurs, perissodactyls expanded and diversified fairly early, then declined. Artiodactyls appear a bit later and increased dramatically almost to modern time, but as with many mammals, there's a decline associated with events during and following the ice ages. For example, camels were diversified in North America up to the Ice Ages at which time they spread into South America (llama, alpaca, vicunia) and also into Asia and beyond to Africa (dromedary and Bactrian camels). All the North American camels go extinct.

You might be interested to know that
1) there were once in NA small camels, average height about 24 inches (0.6m) that ran about in herds possibly containing thousands of them.
2) There were camels larger than a modern camel - Camelops, Alticamelus, Titanotylopus for three of them

Last edited by WPRESTO; 11-12-2019 at 05:37 AM.
11-03-2019, 12:50 PM   #453
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more fitting for this thread

QuoteQuote:
Cheetahs migrated from North America
Date:
December 8, 2015
Source:
BioMed Central
Summary:
The cheetah (Acinonyx jubatus) is now at home on the African plains, but it started a migration 100,000 years ago from North America towards its current habitat. The research found that the migration from North America was costly for the species, triggering the first major reduction in their gene pool . . .The cheetah is descended from a relative of American pumas and their fossil record extends across the Americas, Europe and Asia. The species has suffered two population bottlenecks -- an event whereby the population is rapidly reduced due to environmental factors. . . .
Cheetahs migrated from North America -- ScienceDaily
11-04-2019, 03:12 PM - 2 Likes   #454
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x-posted in the phone camera thread



11-04-2019, 05:46 PM   #455
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QuoteOriginally posted by yorik Quote
x-posted in the phone camera thread
Super cute cat and a great black and white photo.
11-05-2019, 10:35 AM - 2 Likes   #456
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Thank you! Knuckles (so named because he is polydactyl with 6 toes on each foot) is the most human-tolerant cat we have every encountered. He happily sits
like that in an available lap and purrs loudly as you rub his tummy (?!) or massage his large feet (!?!). He also drools when he is particularly happy... that is less
charming.
11-05-2019, 04:33 PM - 1 Like   #457
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Bobcat

K 3 II + HD PENTAX-D FA* 70-200mm F2.8 ED DC AW

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11-06-2019, 09:58 AM - 1 Like   #458
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Another phone-cat picture...

11-06-2019, 11:31 AM - 2 Likes   #459
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11-07-2019, 02:48 PM - 4 Likes   #460
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Last edited by mattb123; 11-07-2019 at 03:08 PM.
11-12-2019, 05:30 AM - 1 Like   #461
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Beginning Morning Ablutions
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11-14-2019, 07:11 PM - 5 Likes   #462
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I realized that I hadn't taken many pictures of Fester lately, so here he is.
11-14-2019, 08:55 PM - 1 Like   #463
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QuoteOriginally posted by ramseybuckeye Quote
I realized that I hadn't taken many pictures of Fester lately, so here he is.
Great capture! I love it when cats are so intent on whatever they're watching.

--Steve
11-15-2019, 05:52 AM - 1 Like   #464
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QuoteOriginally posted by ramseybuckeye Quote
I realized that I hadn't taken many pictures of Fester lately, so here he is.
He’s beautiful! You should take more pictures of him. Thanks for sharing this one.

---------- Post added 11-15-19 at 06:53 AM ----------

QuoteOriginally posted by mattb123 Quote
Adorable! What is the kitty in the basket’s name?

---------- Post added 11-15-19 at 07:02 AM ----------

Last edited by Deesquared; 11-15-2019 at 04:39 PM.
11-15-2019, 07:01 AM - 1 Like   #465
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I agree with preceding comments on Fester. An unusual color, both coat & eyes, and a very handsome kitty.
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