Fossil Fruits and Seeds of Zingiberales from the Late Cretaceous–Early Cenozoic Deccan Intertrappean Beds of India
Fossil Fruits and Seeds of Zingiberales from the Late Cretaceous–Early Cenozoic Deccan Intertrappean Beds of India
复制标题
印度晚白垩世-早新生代德干特拉普盆地的姜目化石果实和种子
DOI：
10.1086/711474
复制
发表时间：
2021
影响因子：
2.3
通讯作者：
S. Manchester
中科院分区：
文献类型：
--
作者：
Selena Y. Smith;D. Kapgate;Shannon Robinson;R. Srivastava;John C. Benedict;S. Manchester
研究的前提。姜目的化石果实和种子提供了关于该目过去多样性和分布的重要数据，增强了我们对生姜、香蕉和亲戚进化历史的理解。 方法：利用物理切片、抛光切片、果皮和微型计算机断层扫描，研究了印度中部晚白垩世-早新生代德干间陷层中三种不同类型的姜果实和种子。 基于形态学的系统发育分析，以评估化石的系统发育中的位置，在Escherberales。结果：重新评估了"Musa" cardiosperma Jain的果实和种子，新采集的标本表明，该物种在马斯特里赫特晚期在印度中部很常见，分布广泛。 形态上的差异表明，它们不符合现存的芭蕉属，而是代表了一个已灭绝的芭蕉科属，其名称为Momordiocarpon R. N. Deshmukh & Kokate有优先权心种子（Momordiocarpon cardiospermum（R.K.）Jain）comb. nov.缺乏现存芭蕉科的珠孔环，只有一个弱的斜合点室。根据Marai Patan的Maastrichtian的种子，鉴定了Patanense gen. et sp. nov.。这些种子在横切面和矢状面上呈90 °角的矩形，在冠状面上呈倒卵形。与任何现存的紫云英目不同，单果木属和紫云英属在脐部区域都有大量加厚的种皮。系统发育分析将单子叶植物和单子叶植物归为菊科。CalciummonitesindicusBande，Mehrotra & Prakash是古华古新世的一个分类单元，其果实中有完整的种子。cardiospermum;其原始的二项式恢复。结论：这三个物种共同增加了印度晚白垩世和新生代早期已知的物种多样性。 其中两个种被证实是在紫菀科，加强我们的理解，早期多样化和紫菀的地理传播。
Premise of research. Fossil fruits and seeds of Zingiberales provide essential data on the past diversity and distribution of the order, augmenting our understanding of the evolutionary history of gingers, bananas, and relatives. Methodology. Three different types of zingiberalean fruits and seeds from the Late Cretaceous–early Cenozoic Deccan Intertrappean beds of central India were studied using physical sections, polished slices, peels, and micro–computed tomography scanning. A morphology-based phylogenetic analysis was conducted to assess the fossils’ phylogenetic position within Zingiberales. Pivotal results. Fruits and seeds of “Musa” cardiosperma Jain were reevaluated, and newly collected specimens indicate that this species was common and widely distributed across central India during the late Maastrichtian. Morphological differences indicate that they do not conform to the extant genus Musa but instead represent an extinct genus of Zingiberaceae for which the name Momordiocarpon R.N. Deshmukh & Kokate has priority. Seeds of Momordiocarpon cardiospermum (R.K. Jain) comb. nov. lack the micropylar collar found in extant Musaceae and have only a weakly defined oblique chalazal chamber. Orthogonospermum patanense gen. et sp. nov. is recognized based on seeds from the Maastrichtian of Marai Patan. These seeds are rectangular, with 90° corners in transverse and sagittal sections, and are obovate in coronal section. Both Momordiocarpon and Orthogonospermum have massively thickened seed coats in the hilar region, unlike any extant Zingiberales. Phylogenetic analyses place Momordiocarpon and Orthogonospermum in Zingiberaceae. Callistemonites indicus Bande, Mehrotra & Prakash, known from fruits with intact seeds from the Paleocene of Ghughua, is here shown to represent a taxon distinct from M. cardiospermum; its original binomial is reinstated. Conclusions. Together, these three species add to the known diversity of the Late Cretaceous and early Cenozoic of India. Two of these species are confirmed to be in Zingiberaceae, enhancing our understanding of the early diversification and biogeographic spread of Zingiberales.
影响因子：
56.9
作者：
Sprain, Courtney J.;Renne, Paul R.;Mittal, Tushar
通讯作者：
Mittal, Tushar
来自印度的化石棕榈果表明槟榔科部落Borasseae的白垩纪起源
影响因子：
2.4
作者：
Matsunaga, Kelly K;Manchester, Steven R;Srivastava, Rashmi;Kapgate, Dashrath K;Smith, Selena Y
通讯作者：
Smith, Selena Y