New plant fossils from the Lower Cretaceous of the Parnaíba Basin, Northeastern Brazil: Southern Laurasia links

Lindoso, Rafael Matos; Dutra, Tânia Lindner; Carvalho, Ismar de Souza; Medeiros, Manuel Alfredo

doi:10.1590/2317-4889201820170071

Cited by 7 publications

(1 citation statement)

References 103 publications

(139 reference statements)

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“…Paleobotanical studies can provide convincing evidence of the evolutionary history of organisms. Numerous gnetalean macro-and mesofossils have been reported from the Mid-Jurassic to Early Cretaceous, i.e., Asia [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], Australia [32], Europe [33][34][35][36][37], North America [33][34][35][36][38][39][40] and South America [41][42][43][44][45][46][47][48][49][50]. These fossils show a wide distribution range (Australia, NE China, Mongolia, United States of America, Brazil and Portugal) and huge morphological diversity [22,23,25,27,33,35,…”

Section: Introductionmentioning

confidence: 99%

A New Gnetalean Macrofossil from the Mid-Jurassic Daohugou Formation

Yang

Lin³

et al. 2023

Plants

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Macrofossil evidence has demonstrated a first radiation of gnetophytes in the Early Cretaceous. However, the origin of the diversity of gnetophytes remains ambiguous because gnetalean macrofossils have rarely been reported from pre-Cretaceous strata. Here, we report a new putative gnetalean macrofossil reproductive shoot which possesses opposite phyllotaxy, long linear leaves more or less decurrent and having a prominent midvein and pedicled ovoid-ellipsoid and longitudinally striated chlamydosperms. Our new fossil is different from other known gnetalean macrofossils in the linear-lanceolate leaves with a midvein and pedicled chlamydosperms. As a result, we describe this new macrofossil reproductive shoot as new to science, i.e., Daohugoucladus sinensis gen. et sp. nov. Our new macrofossil displays additional morphological characters distinct from other known Mesozoic and modern gnetalean species and provides additional evidence of the origin and early evolution of female reproductive organs of gnetophytes.

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