The homoxylous fossil woods occurring in the Gondwanan continents of South America, Australia, Africa, India and Antarctica during the Jurassic and Early Cretaceous period are considered here. Original descriptions of the genera and wherever possible, the type material, have been consulted. Applying the rules of the International Code of Botanical Nomenclature, the generic names of the homoxylous woods have been revised from a nomenclatural point of view. According to this review, out of 31 generic names used for woods from the given time interval and area, 6 are illegitimate later nomenclatural synonyms, 1 is a later homonym, and 5 can be considered as taxonomical synonyms. Moreover, 9 genera have been used erroneously. We propose one new generic name (Protaxodioxylon n. gen.) and elsewhere we will propose for conservation, with a conserved type one of the illegitimate names and one of the taxonomic synonyms. As a result, we consider that there are only eighteen generic names correctly quoted for the Jurassic-Early Cretaceous of Gondwana, and we provide a taxonomic key for the corresponding genera. This revision is the first step in systematically comparing northern and southern hemisphere woods.

中文翻译：

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侏罗纪-早白垩世冈瓦纳同木：具有分类注释的属的命名修订

这里考虑了侏罗纪和早白垩世时期出现在南美洲冈瓦纳大陆、澳大利亚、非洲、印度和南极洲的同木化石木材。已经查阅了属的原始描述以及可能的类型材料。应用《国际植物命名法典》的规则，从命名的角度修改了同木属木材的属名。根据该综述，在给定时间间隔和区域内用于木材的 31 个通用名称中，6 个是非法的后期命名同义词，1 个是后来的同形异义词，5 个可以被视为分类学同义词。此外，9个属被错误地使用。我们提出了一个新的通用名称 (Protaxodioxylon n. gen.)，我们将建议在其他地方进行保护，具有保守类型的非法名称之一和分类学同义词之一。因此，我们认为冈瓦纳侏罗纪-早白垩世只有 18 个属名正确引用，我们提供了相应属的分类学关键字。本次修订是系统比较北半球和南半球木材的第一步。