When and Why Nature Gained Angiosperms

Kvaček, Jiřı́; Coiffard, Clément; Gandolfo, María A.; Herman, Alexei B.; Legrand, Julien; Mendes, Mário Miguel; Nishida, Harufumi; Sun, Ge; Wang, Hongshan

doi:10.1007/978-3-030-35058-1_5

Cited by 5 publications

(3 citation statements)

References 121 publications

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“…Based on extensive evidence, we know now that the first flowering plants appeared at low-latitude areas in Northern Gondwana in the Early Cretaceous (ca. 135 Ma), and then they gradually began to disperse to mid- and high-latitudes in both hemispheres throughout the Cretaceous 3 . However, the inherently incomplete fossil record still hinders a precise reconstruction of the early evolutionary history of angiosperms and diversification of the main extant lineages, such as the eudicots.…”

Section: Introductionmentioning

confidence: 99%

First evidence of ranunculids in Early Cretaceous tropics

Gobo

Kunzmann

Iannuzzi

et al. 2022

Sci Rep

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Early Cretaceous floras containing angiosperms were described from several geographic areas, nearly from the Arctic to the Antarctic, and are crucial to understand their evolution and radiation. However, most of these records come from northern mid-latitudes whereas those of lower paleolatitude areas, such as the Crato Fossil Lagerstätte in NE Brazil, are less studied. Here, we describe from this region of northern Gondwanan origin, two fossil-species of eudicots belonging to a new extinct genus Santaniella gen. nov. Together with several vegetative axes and leaves, anatomically well-preserved fruits with seeds and persistent perianth-like organs allowed us to reconstruct its potential affinities with ranunculids, and presumably Ranunculaceae. Previous records putatively assigned to Ranunculales are all from mid-latitudes, and their first unequivocal occurrence in a low-latitude area supports further the hypothesis of a widespread radiation of the earliest diverging eudicot lineage by this early age.

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Section: Introductionmentioning

confidence: 99%

First evidence of ranunculids in Early Cretaceous tropics

Gobo

Kunzmann

Iannuzzi

et al. 2022

Sci Rep

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“…Further well-documented Bennettitales are known from the Early Cretaceous of Germany (Pott et al 2014). In the mid-and Late Cretaceous, we observe a gradual decline of Bennettitales (Kvaček 1995, Knobloch and Kvaček 1997, Yamada 2009, Sender 2018, particularly due to the expansion of quickly evolving and spreading angiosperms (Friis et al 2011, Kvaček et al 2020. Foliage of the Bennettitales is characterised by simply pinnate leathery fronds similar to cycads, from which they differ in having syndetocheilic stomata and commonly typically sinuously formed anticlinal walls of the epidermal cells (Taylor et al 2009).…”

Section: Introductionmentioning

confidence: 97%

New species of Zamites from the Cenomanian of the Bohemian Cretaceous Basin

Kvaček¹

2022

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Zamites pateri J.Kvaček is described as a new member of the Bennettitales from the Cenomanian of the Peruc-Korycany Formation, Bohemian Cretaceous Basin in the Czech Republic. It comes from fluvial sediments exposed in the Pecínov quarry. It is compared to Zamites bayeri J.Kvaček from the Peruc-Korycany Formation, from which it differs in having pinnae attached to the dorsal part of the rachis and in cuticular details, particularly in having costal zones narrower than intercostal zones, stomata orientated always perpendicularly to the leaf margins and a thinner adaxial cuticle. Epidermal characters, particularly sunken stomata and numerous papillae underpin the mesophytic/xerophytic nature of the plant fossil.

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“…However, the scarcity of earliest and succeeding forms in fossil records can be also caused by preservational biases, undersampling and low intensity of investigation. Numerous studies of middle paleolatitude floras have significantly reduced the knowledge gaps on Early Cretaceous angiosperms, while those from paleotropical areas, where allegedly flowering plants started to diversify, are still in need of more investigations, especially regarding macrofossils of eudicots, the most diverse angiosperm clade 3 , 4 . The knowledge gaps on macrofossils in the Early Cretaceous tropics contrast with the substantial and comparatively well-studied microfossil record 5 , 6 .…”

Section: Introductionmentioning

confidence: 99%

A new remarkable Early Cretaceous nelumbonaceous fossil bridges the gap between herbaceous aquatic and woody protealeans

Gobo

Kunzmann

Iannuzzi

et al. 2023

Sci Rep

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Dating back to the late Early Cretaceous, the macrofossil record of the iconic lotus family (Nelumbonaceae) is one of the oldest of flowering plants and suggests that their unmistakable leaves and nutlets embedded in large pitted receptacular fruits evolved relatively little in the 100 million years since their first known appearance. Here we describe a new fossil from the late Barremian/Aptian Crato Formation flora (NE Brazil) with both vegetative and reproductive structures, Notocyamus hydrophobus gen. nov. et sp. nov., which is now the oldest and most complete fossil record of Nelumbonaceae. In addition, it displays a unique mosaic of ancestral and derived macro- and micromorphological traits that has never been documented before in this family. This new Brazilian fossil-species also provides a rare illustration of the potential morphological and anatomical transitions experienced by Nelumbonaceae prior to a long period of relative stasis. Its potential plesiomorphic and apomorphic features shared with Proteaceae and Platanaceae not only fill a major morphological gap within Proteales but also provide new support for their unexpected relationships first suggested by molecular phylogenies.

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When and Why Nature Gained Angiosperms

Cited by 5 publications

References 121 publications

First evidence of ranunculids in Early Cretaceous tropics

First evidence of ranunculids in Early Cretaceous tropics

New species of Zamites from the Cenomanian of the Bohemian Cretaceous Basin

A new remarkable Early Cretaceous nelumbonaceous fossil bridges the gap between herbaceous aquatic and woody protealeans

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