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首页> 外文期刊>Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen >Macrocephalitinae (Ammonoidea, Middle Jurassic) from North and Central Iran
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Macrocephalitinae (Ammonoidea, Middle Jurassic) from North and Central Iran

机译：伊朗北部和中部的Macrocephalitinae（Ammonoidea，中侏罗纪）

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Macrocephalites is one of the most common and cosmopolitan ammonites of the Middle Jurassic and partially an important guide fossil in Europe and the Indo-East-African Province. The ammonites of this genus inhabited the shelf seas around the edges of the Tehtys Ocean from the Late Bathonian to the earliest Middle Callovian. In Iran Macrocephalites is rather rare, we only know a dozen of localities in the North Iran (Alborz and Binalud mountains) and Central Iran. Most of the specimens come from the locality named Talu near Damghan in the eastern Alborz, from the marls and limestones of the Dalichai Formation. The Macrocephalites fauna of Talu seem to belong to the middle part of the Bullatus Zone (Lower Callovian). Further collections from localities in Binalud, Koppeh Dagh and Tabas areas indicate horizons of other ages. Thus, a sequence of 8 ammonite assemblages can be proposed for the Upper Bathonian and Lower Callovian of Iran. In Iran Macrocephalites is only frequent in the Bullatus Zone, but also occurs in the Prahecquense Subzone. Only a single Macrocephalites was found in the Gracilis Zone at Kelariz. The Macrocephalites gracilis fauna, which is typical of the middle Gracilis Zone, and the M. opis-semilaevis fauna from the Lower-Middle Callovian boundary seems to be absent in Iran. Overall the Middle Jurassic ammonite fauna of North and Central Iran belongs to the Submediterranean Province.
机译：大头怪是中侏罗世最常见和世界性的am石之一，在欧洲和印度-东非省是部分重要的引导化石。该属的铵盐虫居住在蒂蒂斯海洋边缘的陆架海中，从晚巴东期到最早的中卡洛维期。在伊朗，巨头目很少见，我们只知道伊朗北部（阿尔伯兹和比纳鲁德山脉）和伊朗中部的十几个地方。大部分标本来自达里海地层的泥灰岩和石灰岩。塔鲁的大头目动物区系似乎属于布勒图斯地区（下卡洛维安）的中部。来自比纳洛德，科佩·达格和塔巴斯地区的地方进一步收集的资料表明了其他年龄段的情况。因此，可以为伊朗的上巴东和下卡洛维安提出8种of石组合的序列。在伊朗，大型头目仅在布勒图斯地区频繁发生，而且也出现在Prahecquense次区域中。在Kelariz的Gracilis区域仅发现了一个大型头足纲动物。在伊朗似乎缺少中部格拉西里斯带的大型头颅动物区系，以及下-中卡洛维边界的opis-semilaevis动物区系。总体而言，伊朗北部和中部的侏罗纪中部侏罗纪动物区系属于地中海下省。

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