Abstract

The xylotomy of the silicified wood from the Late Jurassic to Early Cretaceous Kota Formation of the Pranhita-Godavari Basin is studied and its systematic affinity is identified here. The wood is characterised by distinct growth rings with mixed pitting on radial tracheid walls, and taxodioid cross-field pits. The combination of the features observed in the present wood indicates that, it belongs to Protaxodioxylon of the taxodiaceous Cupressaceae s. l., as a new species Protaxodioxylon sahnii sp. nov. The comparison of wood with the modern representatives of the family suggests its relation with Taxodium. The present fossil wood with distinct growth rings characterised by their low percentage of latewood suggests that the growth conditions were favorable. The riparian habitat was inferred for the Protaxodioxylon sahnii sp. nov., based on sedimentological and other associated plant fossils. The vegetation in the study area is possibly favored by the influence of a subtropical climate with seasons, and by high levels of precipitation along the river banks.

中文翻译：

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印度Pranhita-Godavari盆地侏罗纪晚期至早白垩世Kota组的原双氧水龙

摘要

研究了Pranhita-Godavari盆地侏罗纪晚期至白垩纪柯塔早期硅化木的切分法，并确定了其系统亲和力。木材的特征在于不同的年轮，在径向气管壁上带有混合的凹坑，以及类胡萝卜素的交叉场凹坑。在本木材中观察到的特征的组合表明，它是属于新科柏树科的一种，属于紫杉科柏树的原木。十一月 木材与现代家庭代表的比较表明，它与紫杉属植物的关系。目前具有不同生长轮的化石木材，其特征在于其低比例的低聚木，这表明其生长条件是有利的。推断河岸生境为Protaxodioxylon sahnii sp。十一月，基于沉积学和其他相关植物化石。研究区的植被可能受到亚热带气候和季节的影响以及沿河两岸的高水平降水的青睐。