Dapediidae are a characteristic group of deep-bodied Mesozoic actinopterygian fishes with a moderate diversity at genus- and species-level. Here, we add a new occurrence to their patchy fossil record and describe in detail a nearly complete dapediid specimen from the pelagic deposit of the Toarcian Úrkút Manganese Ore Formation in the Transdanubian Range of Hungary. The preserved characters represent nearly all anatomically important body parts and allow assignment to Dapedium and comparison with other dapediid genera. This is the first reported occurrence of the order in Hungary and the Carpathian Basin that extends the known geographical range of the genus to the Mediterranean (western Tethyan) Jurassic. A review of the temporal distribution of published occurrences of dapediids permits speculation that the disappearance of exclusively Late Triassic genera, coincident with the end-Triassic extinction event, was likely related to their specialised feeding strategies and light or incomplete squamation. Multiple environmental crises (warming, acidification and anoxia) severely affected reefal habitats and favoured the survival of the generalist-durophagous Dapedium. The Úrkút specimen adds important data to the Early Jurassic, particularly Toarcian Lagerstätte-dominated fossil record of dapediids. In contrast to the end-Triassic, the Toarcian oceanic anoxic event did not lead to genus extinction among dapediids, possibly prevented by adaptations evolved during the preceding and similarly multi-stressor event. Continuing studies of Mesozoic fish specimens in Hungarian collections may provide new records and insights into other groups as well.

中文翻译：

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ped 来自Toarcian（下侏罗统）Úrkút锰矿的形成（匈牙利Bakony山），以及dapediiform鱼类的多样性概述

ped科是深部中生放线翅目鱼类的特征群，在属和种水平上具有中等多样性。在这里，我们向其斑驳的化石记录中添加了一个新的事件，并详细描述了匈牙利跨丹努比亚山脉ToarcianÚrkút锰矿层中上层沉积物中近乎完整的双足类标本。保留的角色几乎代表了人体解剖学上所有重要部位，并允许分配给Dapedium并与其他足癣属进行比较。这是在匈牙利和喀尔巴阡盆地首次报道该顺序，将已知属的地理范围扩展到地中海（特提斯西部）侏罗纪。回顾已发表的脚踏虫发生的时间分布可以推测，仅三叠纪晚期属的消失与三叠纪末期的灭绝事件相吻合，很可能与它们的专门喂养策略和轻度或不完全的鳞屑有关。多重环境危机（变暖，酸化和缺氧）严重影响了珊瑚礁的栖息地，并有利于多面手-硬鳞鱼的生存。所述乌尔库特试样添加的重要数据到早侏罗纪，特别托尔阶化石库占主导地位的化石记录。与三叠纪末期相比，Toarcian的海洋缺氧事件并未导致幼足类间的灭绝，这可能是由先前和类似的多应激事件发生时产生的适应性阻止的。匈牙利收集的中生代鱼标本的持续研究也可能为其他群体提供新的记录和见解。