Panthera gombaszoegensis (Kretzoi, 1938) from Poland in the scope of the species evolution

摘要

Panthera gombaszoegensis was recorded over from 100 African and Eurasian localities, ranged between 2.5 and 0.3 Myr. Among them, seven cave sites, ?abia, Tunel Wielki, Kozi Grzbiet, Draby 3, Po?udniowa, Bi?nik, and Komarowa caves, dated in the range of 1.7-0.3 Myr, were those in Poland. They were located in Sudety Mts, Kraków-Cz?stochowa Upland, Wieluń Upland and Holy Cross Mts. The material from Polish sites is not very numerous, being represented mostly by isolated teeth, metapodials and phalanges, however it is well informative diagnostically. From each site, except the Bi?nik Cave, remains of a single large-sized individual, mostly of males, were found. The oldest record from ?abia Cave, dated on 1.7-1.5 Myr, because of lack of suifficient diagnostic features, was classified as P. gombaszoegensis. Bones from the other sites were assigned to Panthera gombaszoegensis gombaszoegensis, late Early and Middle Pleistocene chronoform widespread in Eurasia. Analysis of a large series of teeth size in the course of time does not showed any particular changes, and the size of the Eurasian jaguar was more or less comparatively large through its entire timespan occurrence. Panthera gombaszoegensis was ecologically flexible species able to hunt in a wide prey spectrum; its size, comparable with that of a small hon Panthera leo (Linnaeus, 1758) or island tiger Panthera tigris (Linnaeus, 1758), guaranteed this jaguar one of the leading position among large carnivores. This was a member of stabile by 1 Myr carnivore paleogulld, single, conical-toothed cat, and it was well adapted to changed environmental conditions initiated by glacial-interglacial cycles. It seems that climate changes do not affected so much on P. gombaszoegensis as previously thought. The main factor responsible for the jaguar decline was the arrival of the Pleistocene lion, which affected negatively and caused strong competition. Because to its flexibility, jaguar was able to survive relatively longer than other ancient carnivores. Gradually as the density and abundance of the hon increased, a compact and wide geographic range started to shrink up to the form of isolated areas. Areas with the last, relict jaguar survivors were located far away one from another and overwhelmed by populations of P. s. fossilis. The final extinction of the species was between 350 and 300 kyr, and among them Polish find from the layer 19ad of Bi?nik Cave should be highlighted as one of the latest Eurasian record of Panthera gombaszoegensis.