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首页> 外文会议>Workshop - Eudimorphodon: 30 Anni Dalla Scoperta; 20031107; Bergamo(IT) >THE ICHTHYOFAUNA OF THE ZORZINO LIMESTONE
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THE ICHTHYOFAUNA OF THE ZORZINO LIMESTONE

机译：Zorzino Limestone的鱼类

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摘要

Fishes represent most of the vertebrate fossils found in the Zorzino Limestone, since the first findings about 30 years ago. In no other Triassic, or possibly Mesozoic site, it is possible to found such a great variety of taxa. In the classic Monte San Giorgio -Besano area, famous for its rich and diversificate faunas, for example, the ichthyofauna is made of about 40 genera spread over 15 million years, while in the Zorzino Limestone we may reach 40-50 genera for a single level. For this reason the fauna coming from this unit is fundamental to understand and to follow the extraordinary diversification reached by fishes during the Late Triassic. During the Norian, in fact, we can assist to the gradual passage from a more primitive fauna, dominated by the paleopterygians, who flourished all through the Paleozoic until the Middle-Late Triassic, to the more advanced one, represented by neopterygians: these latter made their appearance since the late Permian/early Triassic, but only in the Norian they were able to bloom reaching also some important feeding and swimming specializations.
机译：自约30年前首次发现以来，鱼类代表了Zorzino石灰石中发现的大多数脊椎动物化石。在其他三叠纪或中生代遗址中，不可能发现如此大量的分类单元。例如，在以其丰富多样的动物而闻名的经典的圣乔治-贝萨诺山地区，鱼鳞鱼由大约40属组成，分布于1500万年，而在Zorzino石灰石中，我们可能会达到40-50属。水平。因此，来自该单位的动物群对于理解并遵循三叠纪晚期鱼类所达到的非同寻常的多样化至关重要。实际上，在Norian时期，我们可以协助逐步发展一种以古昆虫为主的更原始的动物群，古生物在整个古生代繁盛，直到中晚期三叠纪，再到以新鳞翅目动物为代表的更先进的动物群：自二叠纪晚期/三叠纪早期开始出现，但只有在诺里安，它们才能开花，还达到了一些重要的喂养和游泳专业化要求。

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