Revision of the Silesian bear fauna, based on material from 152 sites, mainly cave and karstic localities, and also archaeological and open-air sites, shows the presence of 13 forms and species. These records encompass the last 16.5 Ma and may be divided into five main morphophyletic groups. The oldest bears, represented by the genera Ballusia and Ursavus, are dated to 16.5–11 Ma, and belonged to the stem forms of the subfamily Ursinae. After a break of 6 My, the earliest members of the genus Ursus appeared, and all known Pliocene bears in Silesia belong to the genus Ursus were identified as Ursus minimus. They represent one or two migration events. Additionally, between 3.6 and 3.2 Ma, a single occurrence of Agriotherium insigne was recorded from the Węże 1 site. A few Early Pleistocene bear records are represented by U. etruscus, which was a probable ancestor of both arctoid and spelaeoid bear lineages. The oldest representative of Ursus ex gr. arctos known so far and assigned to U. a. suessenbornensis is known from one latest Early Pleistocene (1.2–0.9 Ma) locality, while other Polish records of this form require confirmation. The first occurrence of U. deningeri, the oldest taxon within the U. ex gr. deningeri–spelaeus lineage, was recorded from ~700 ka deposits in Silesia. During the pronounced cold period of MIS 12, the Scandinavian ice sheet covered almost the entire modern territory of Poland, with the exception of the Sudetes and the Carpathians. The accompanying drastic faunal turnover led to the formation of the pan-Eurasian Mammoth Fauna at ~460 ka. At that time a characteristic member of this fauna, the steppe brown bear Ursus arctos priscus, a specific ecomorph adapted to live in open grasslands, appeared in this region. It survived until the beginning of MIS 1, when modern Ursus arctos arctos appeared in Silesia and survived to the present day. U. deningeri was the most common bear during the Middle Pleistocene, while the first records of U. spelaeus spelaeus appeared since MIS 7. The latter form was replaced by U. ingressus during the Late Pleistocene (~110–100 ka). Spelaeoid bears totally dominated the cave assemblage, and finally vanished between 27 and 24 ka.

根据来自152个地点（主要是洞穴和岩溶地区）以及考古和露天地点的资料对西里西亚熊的动物群进行了修订，显示存在13种形式和物种。这些记录涵盖了最后的16.5 Ma，并且可以分为五个主要的形态学组。以Ballusia和Ursavus属为代表的最古老的熊可追溯到16.5-11 Ma，属于Ursinae亚科的茎形。在6 My断裂后，出现了Ursus属的最早成员，西里西亚所有已知的上新世熊都属于Ursus属，被鉴定为Ursus minimus。它们代表一两个迁移事件。此外，3.6至马3.2，的单个匹配郊熊insigne从Węże1站点记录。U. etruscus代表了一些早更新世的熊记录，U。etruscus可能是弓形和蝶形熊血统的祖先。Ursus ex gr。的最老代表。迄今为止已知并已分配给美国的arcto 。suessenbornensis以最近的一个更新世（1.2-0.9 Ma）地区而闻名，而这种形式的其他波兰记录也需要确认。的第一次出现U. deningeri，所述内最古老的类群ü。出厂 Deningeri–spelaeus从西里西亚的约700 ka沉积物中记录了沿袭。在MIS 12明显寒冷的时期，斯堪的纳维亚的冰盖几乎覆盖了波兰的整个现代领土，除了Sudetes和喀尔巴阡山脉。随之而来的剧烈动物区系转换导致了约460 ka的泛欧亚猛Ma象动物区系的形成。当时，该地区出现了这种动物的一个典型成员，即草原棕熊熊（Ursus arctos priscus），一种适应于开阔草原生活的特殊生态型。它一直生存到MIS 1的开始，当时现代的Ursus arctos arctos出现在西里西亚，直到今天。U. deningeri是中更新世最常见的熊，而最早的记录是U. spelaeus spelaeus自MIS 7起出现。后者在晚更新世（〜110–100 ka）期间被U. ingressus取代。蝶骨熊在整个洞穴组合中占据了主导地位，并最终在27至24 ka之间消失了。