Panthera leo spelaea

Panthera leo spelaea, commonly known as the European or Eurasian cave lion, is an extinct subspecies of lion. It is known from fossils and many examples of prehistoric art.

Classification
The cave lion is sometimes considered a species in its own right, under the name Panthera spelaea,[1] and at least one authority, based on a comparison of skull shapes, considers the cave lion to be more closely related to the tiger, which would result in the formal name Panthera tigris spelaea.[2] However, recent genetic research shows it was most closely related to the modern lion among extant felids,[3][4] and that it formed a single population with the Beringian cave lion,[4] which has been sometimes considered as to represent a distinct form. Therefore, the cave lion ranged from Europe to Alaska over the Bering land bridge until the late Pleistocene. However, it is still not clear whether it should be considered a subspecies of the lion or rather a closely related species.[4]

Analysis of skulls and mandibles of a lion that inhabited Yakutia (Russia), Alaska (USA), and the Yukon Territory (Canada) during the Pleistocene epoch suggested that it was a new subspecies different from the other prehistoric lions, Panthera leo vereshchagini, known as the East Siberian- or Beringian cave lion[5] It differed from Panthera leo spelaea by its larger size and from the American lion (Panthera leo atrox) by its smaller size and by skull proportions.[5][6] However, recent genetic research, using ancient DNA from Beringian lions found no evidence for separating Panthera leo vereshchagini from the European cave lion; indeed, DNA signatures from lions from Europe and Alaska were indistinguishable, suggesting one large

Evolution
The cave lion (Panthera leo spelea) was evolved from the earlier Panthera leo fossilis, which first appeared in Europe about 700,000 years ago. Genetic evidence indicates this lineage was isolated from extant lions after its dispersal to Europe.[3] P. l. spelaea lived from 370,000 to 10,000 years ago, during the Pleistocene epoch. Apparently, it became extinct about 12,500 C-14 years ago,[4] as the Würm glaciation receded.

Mitochondrial DNA sequence data from fossil remains show the American lion (P. l. atrox) represents a sister lineage to P. l. spelaea, and likely arose when an early P. l. spelaea population became isolated south of the North American continental ice sheet about 0.34 Mya.

Description
This subspecies was one of the largest lions. The skeleton of an adult male, which was found in 1985 near Siegsdorf (Germany), had a shoulder height of around 1.2 m (4 ft) and a head-body length of 2.1 m (7 ft) without the tail.[citation needed] This is similar to the size of a very large modern lion. The size of this male has been exceeded by other specimens of this subspecies. Therefore, this cat may have been around 8%-10% bigger than modern lions and smaller than the earlier cave lion subspecies Panthera leo fossilis or the relatively larger American lion (Panthera leo atrox).[8] The cave lion is known from Paleolithic cave paintings, ivory carvings, and clay figurines. These representations indicate cave lions had rounded, protruding ears, tufted tails, possibly faint tiger-like stripes, and at least some had a "ruff" or primitive mane around their necks, possibly indicating males. Other archaeological artifacts indicate they were featured in Paleolithic religious rituals.