American Lion (Panthera atrox)

[Smilodon-Rex]

(11-19-2018, 10:20 AM)GrizzlyClaws Wrote:

(11-19-2018, 09:39 AM)Smilodon-Rex Wrote:

(11-18-2018, 04:03 AM)GrizzlyClaws Wrote:

(11-18-2018, 03:56 AM)GuateGojira Wrote: You are right, the muzzle of the specimen is the largest of all the ones in the list.  


The largest Panthera atrox skull "Univ. Calif. 14001" is of 135.9 mm.

Except the obscure Chinese specimen, the specimen 2900-3 has the broadest muzzle of all.

Since Panthera atrox was highly convergent with Panthera onca, so I am not surprising that they had also evolved with massive robust snout.

Well，so 480MM Panthera atrox's skull muzzle would be the broadest one in all of the feline? The 475MM Panthera spalea's skull is a private specimen but recognized officially

If it got the same proportion as the specimen 2900-3, then yes.

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The Panthera atrox's skull specimen UF 9076 from Florida

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Here is the location where UF 9076 was discovered 

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 Panthera atrox's skull in Museum of Florida 
 
UF9076–A Complete Skull and Jaws of a Giant Lion (Panthera atrox) Found in the Ichetucknee River, Florida

A little over 50 years ago, a lucky fossil hunter found the complete skull and jaws of a giant lion in the Ichetucknee River.  This remarkable specimen was missing just a few teeth.  One can imagine how exciting the moment of discovery was for the person who found it.  This particular skull is from a large male lion, and it is larger than almost every lion skull ever excavated from the La Brea Tar Pits in California.  The specimen belongs to the University of Florida Museum of Natural History, and the catalogue number is UF9076.

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Location of Ichetucknee Spring State Park.  The Ichetucknee River flows through this state park into the Santa Fe River where giant lion specimens have also been found.
https://markgelbart.wordpress.com/2016/0...r-florida/
 The website link, let us check this:
“Since the discovery of UF9076, specimens of Panthera atrox have been discovered at 20 other sites in Florida including the Santa Fe River, Vero Beach, the Gulf of Mexico (parts of which were above sea level during Ice Ages), Monkey Jungle Hammock, Cutler Hammock, St. Petersburg, Peace River, Lecanto, Waccasassa River, and Steinhatchee.  These are scattered throughout the state.  The jaw fragment with 2 attached teeth of a Pantheraatrox was also found at Edisto Beach, South Carolina. (From measurements of the teeth, trained paleontologists determined it was from a small female lion.  The size slightly exceeds that of the largest jaguar distinguishing it from that species.  I’m not 100 % confident in this diagnosis, but I’ll defer to the experts.)  The presence of Panthera atrox at all of these sites indicates it occurred throughout southeastern North America during the late Pleistocene.” Reply