Abstract Devonian and Carboniferous dendroid graptolites from Belgium are evaluated and partly revised. New finds in two different stratigraphic intervals of the ‘Carriere de Lompret’, an active quarry exploiting Frasnian limestones and shales east of Frasnes-lez-Couvin, allow the identification of Callograptus sp. and Dictyonema fraiponti, both belonging to the dendroid family Acanthograptidae. The relatively high diversity of the dendroid graptolite fauna from the Visean Marbre noir de Denee, one of the few Carboniferous graptolite faunas in the world, can be shown to be based on astogenetic and preservational aspects. Nearly all known specimens can be included in the highly variable Dictyonema fraiponti, a fan-shaped large dendroid species with complex stipes formed from tubular thecae, possessing simple to complex bridges connecting adjacent stipes. Some of the graptolite material is well preserved and provides important information on the tubarium construction of Devonian to Carboniferous dendroid graptolites and, thus, is highly significant for a taxonomic and phylogenetic understanding of the youngest dendroid graptolite faunas worldwide. The genera Callograptus and Ptiograptus are revised based on their type species (Callograptus elegans from Quebec, Canada; Ptiograptus percorrugatus from the Silurian or Devonian of Kentucky, USA) and referred to the Acanthograptidae.

中文翻译：

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来自比利时的泥盆纪和石炭纪树状笔石及其对树状体分类学的意义

摘要 对比利时泥盆纪和石炭纪树状笔石进行了评价和部分修正。'Carriere de Lompret' 的两个不同地层区间的新发现，这是一个开采 Frasnes-lez-Couvin 以东的 Frasnian 石灰岩和页岩的活跃采石场，可以识别 Callograptus sp。和 Dictyonema fraiponti，都属于树状科 Acanthograptidae。Visean Marbre noir de Denee 是世界上为数不多的石炭纪笔石动物群之一，其树状笔石动物群具有相对较高的多样性，可以证明是基于星体发生和保护方面的。几乎所有已知的标本都可以包含在高度可变的 Dictyonema fraiponti 中，这是一种扇形的大型树状物种，具有由管状鞘形成的复杂叶柄，拥有连接相邻叶柄的简单到复杂的桥。一些笔石材料保存完好，提供了有关泥盆纪至石炭纪树状笔石的 tubarium 结构的重要信息，因此，对于了解世界上最年轻的树状笔石动物群的分类学和系统发育具有重要意义。Callograptus 和 Ptiograptus 属根据其模式种（来自加拿大魁北克的 Callograptus elegans；来自美国肯塔基州志留纪或泥盆纪的 Ptiograptus percorrugatus）进行了修订，并称为 Acanthograptidae。对世界上最年轻的树状笔石动物群的分类学和系统发育理解具有重要意义。Callograptus 和 Ptiograptus 属根据其模式种（来自加拿大魁北克的 Callograptus elegans；来自美国肯塔基州志留纪或泥盆纪的 Ptiograptus percorrugatus）进行了修订，并称为 Acanthograptidae。对世界上最年轻的树状笔石动物群的分类学和系统发育理解具有重要意义。Callograptus 和 Ptiograptus 属根据其模式种（来自加拿大魁北克的 Callograptus elegans；来自美国肯塔基州志留纪或泥盆纪的 Ptiograptus percorrugatus）进行了修订，并被称为 Acanthograptidae。