Abstract Three types of charcoalified fossil homoxylous woods are described from the Upper Cretaceous of the Bohemian Cretaceous Basin: Podocarpoxylon sp.,?Podocarpoxylon vel Taxodioxylon sp. and Protocupressinoxylon sp. They come from the uppermost part of the Peruc-Korycany Formation, which is mid-Cenomanian in age. Podocarpoxylon sp. shows distinct growth rings, uniseriate rays of medium height, 1–2 podocarpoid cross-field pits, and abietinean pitting on radial tracheid walls. Wood of ?Podocarpoxylon vel Taxodioxylon sp. differs in its indistinct growth rings, its rays which are uniseriate with medium height to multiseriate with horizontal resin duct, 1–2 podocarpoid cross-field pits per field, and mixed type of pitting on its radial tracheid walls. Protocupressinoxylon sp. also displays indistinct growth rings, and its rays are either uniseriate of medium height or multiseriate with horizontal resin ducts, but it has 1, occasionally 2–3 cupressoid cross-field pits per field, and abietinean to mixed pitting on radial tracheid walls. One of the three woods shows wood with growth rings, suggesting seasonally dry climate. The composition of the wood assemblage and its comparison with plant megafossils, sporomorphs and sedimentology suggest that there are two paleoenvironments in Unit 5 of the Peruc-Korycany Formation in the Pecinov quarry: a swampy coniferous forest in the coastal lowlands, and a mesophytic forest in the uplands.

中文翻译：

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来自波西米亚白垩纪盆地塞诺曼阶的炭化同木木（捷克共和国）

摘要 波西米亚白垩纪盆地上白垩统描述了三种木炭化木化石：Podocarpoxylon sp.,?Podocarpoxylon vel Taxodioxylon sp.。和 Protocupressinoxylon sp。它们来自 Peruc-Korycany 地层的最上部，该地层的年龄为森诺曼尼亚中期。Podocarpoxylon sp. 显示出明显的年轮、中等高度的单列射线、1-2 个罗汉果交叉场坑和径向管胞壁上的枞树坑。?Podocarpoxylon vel Taxodioxylon sp. 的木材。不同之处在于其年轮不明显，射线由中等高度的单列到多列的水平树脂管，每场1-2个罗汉果交叉场坑，径向管胞壁上有混合型坑。Protocupressinoxylon sp. 还显示出模糊的年轮，其射线要么是中等高度的单列，要么是带有水平树脂导管的多列，但每场有1个，偶尔有2-3个立方体交叉场坑，径向管胞壁上有松香到混合坑。三棵树之一显示有年轮的木材，表明季节性干燥的气候。木材组合的组成及其与植物巨化石、孢子形态和沉积学的比较表明 Pecinov 采石场的 Peruc-Korycany 组 5 单元有两种古环境：沿海低地的沼泽针叶林和高地。三棵树之一显示有年轮的木材，表明季节性干燥的气候。木材组合的组成及其与植物巨化石、孢子形态和沉积学的比较表明 Pecinov 采石场的 Peruc-Korycany 组 5 单元有两种古环境：沿海低地的沼泽针叶林和高地。三棵树之一显示有年轮的木材，表明季节性干燥的气候。木材组合的组成及其与植物巨化石、孢子形态和沉积学的比较表明 Pecinov 采石场的 Peruc-Korycany 组 5 单元有两种古环境：沿海低地的沼泽针叶林和高地。