3 resultados para Wirbeltierpaläontologie


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Jaw remains with teeth from Plio-Pleistocene sediments of the Anatolian upland (Turkey) are the first records of Hyaena perrieri and Euryboas lunensis outside Europe. Both species are members of a fauna of the lowermost Villafranchian. The stratigraphic and geographic range of Hyaena perrieri and H. brevirostris as well as the origin of the genus Euryboas are discussed.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Ein Leopardenfund aus der Baumannshöhle bei Rübeland im Harz, der mit Hilfe seiner Begleitfauna und der an der gleichen Lokalität gefundenen Artefakte in die frühe Weichsel-Eiszeit datiert werden kann, wird mit anderen in der Literatur beschriebenen pleistozänen Vorkommen von Panthera pardus (L.) und mit dem rezenten Leoparden verglichen. Es zeigt sich, daß die pleistozänen Leoparden im Durchschnitt etwas kräftiger als ihre rezenten Verwandten waren. Leichte Abweichungen von den rezenten Verhältnissen finden sich übereinstimmend bei den mittel- bis jungpleistozänen Exemplaren in der Längengliederung von P— und P— (Abb. l). Gerichtete phylogenetische Veränderungen von älteren zu jüngeren Formen lassen sich jedoch nicht nachweisen. Einige der Unterschiede, die den altpleistozänen Leoparden aus den Mauerer Sanden von den jüngeren aus dem Eem- Interglazial und der Saale-Eiszeit bzw. der späten Elster-Eiszeit trennen, werden durch den Rübeländer Fund überbrückt (Abb. 2), ohne daß deswegen an der von SOERGEL (1914) und E.SCHMID (1940) betonten und durch einen Neufund (Beschreibung S.105) bestätigten Sonderstellung des Mauerer Tieres gezweifelt werden kann. Es ist dies lediglich als Beweis dafür anzusehen, daß die Variabilität innerhalb des mittel- bis jungpleistozänen Formenkreises ebenso groß wie bei den rezenten Leoparden gewesen sein muß.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Up to now the bear remains from the "Einhornhöhle,, Cave near Scharzfeld at the foot of the Harz Mountains have been aseribed to the species "Ursus spelaeus" without undertaking comprehensive studies. Owing to an erroneous Classification of the gravel deposits covering part of the cave floor into the Middle Terrace of the Oder Rivulet, the fossil-bearing strata have been assigned to the Eemian Interglacial. RODE, who included a part of the Scharzfeld teeth in his treatise on teeth of the bears, has stated arctoidal features in their formation apart from certain specializations. He arrived at the conclusion that the Scharzfeld Bear differs more pronouncedly from all Central European Cave Bears he had investigated than the same differ from each other, and he named the Scharzfeld Bear: "Ursus spelaeus var. hercynica". The geological exploration of the Einhornhöhle Cave and of its environs carried out by DUPHORN in 196? resulted in the aforesaid gravels pertaining to a terrace of a Pre-Elster- Glaciation age; according to DUPHORN the fossil-bearing Sediments were deposited in a Pre-Elster-Glaciation ffarm- Climate Period. The very sparse aceompanying fauna does not contain any Stratigraphie key form; arctic elements and members of an interglacial forest fauna are missing. Its composition teils in favour of a dry, yet not too cool period of the Pleistocene, which is younger than the Villa- franchium. Consequently the cave must have been taken pos- session of for settling in the Cromerian Interglacial. The investigation of the bear remains has led to the result that, in all systematically .important teeth and skeleton characteristics, the Scharzfeld Bear shows either concor- dance with Ursus deningeri or greater analogy to the same than to Ursus spelaeus; in a few properties it even appears somewhat more primitive than Ursus deningeri. Therefore the bears of the Einhornhöhle Cave belong to the species "Ursus deningeri v. REICHENAU 1906". In the frontal teeth certain specializations occur. However, in view to the great varia- bility of the deningeri-"rassenkreis" there does not seem to be a justification for establishing a subspecies of its own. Whereas up to now nothing had been known in respect of the hibernation habits of Ursus deningeri, there has for the first time been furnished proof that an Ursus deningeri population had oecologically become "cave" bears. Consequently this specialization, as the onset and cause of which the Elster Glaciation was up to now considered, must already be originating in older cold epochs.