<i>Cathaya vanderburghii</i>, a misnomer for European Neogene fossil cones

Xu, Xiaohui; Zhang, Xin; Yang, Liuyin

doi:10.1002/tax.12740

Cited by 2 publications

(1 citation statement)

References 16 publications

(37 reference statements)

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“…In the fossil record, Nothotsuga is relatively uncommon and has been reported from the Eocene to Pliocene of Asia and Europe (Miki, 1954; Karavayev, 1958; Chen et al, 1992; Kunzmann & Mai, 2005; Sadowski et al, 2017; Ding et al, 2021a; Xu et al, 2022; Dong et al, 2023). Ding et al (2021a) questioned the assignment of fossil seed cones that were discovered in the Oligocene of Yakutia, Russia, and in the Pliocene of Japan (Miki, 1954; Karavayev, 1958) to N .…”

Section: Systematic Paleobotanymentioning

confidence: 99%

Exceptionally well‐preserved seed cones of a new fossil species of hemlock, Tsuga weichangensis sp. nov. (Pinaceae), from the Lower Miocene of Hebei Province, North China

Gee

Tan

et al. 2023

J of Sytematics Evolution

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Tsuga (hemlock) is a small genus of 10 extant species in the Pinaceae, with a disjunct distribution in East Asia and eastern and western North America. Reliable species‐level identification of Tsuga fossils depends on the discovery of seed cones with intact bracts, but such cones are rare in the fossil record. Here we describe a new fossil species of hemlock as T. weichangensis sp. nov. based on exquisitely preserved seed cones with nearly complete bracts from the Lower Miocene of Weichang, Hebei Province, North China. This fossil species displays a mosaic of characters between Tsuga and Nothotsuga. The well‐developed and slightly exserted bract scales of T. weichangensis are reminiscent of Nothotsuga, but other characters, such as nonleaved peduncles and tongue‐shaped bract scales, in addition to monosaccate pollen found at the same fossil locality, suggest an affinity closer to Tsuga. Cladistic analysis based on 15 morphological characters and a molecular backbone constraint supports the assignment of these fossil cones to Tsuga rather than Nothotsuga, and places the fossil species of T. weichangensis in an unresolved polytomy within the genus Tsuga. The occurrence of Tsuga seed cone fossils indicate the paleoclimate in the Miocene of Weichang was warmer and more humid than today's climate, which is consistent with the paleoclimate reconstructed by paleopalynology.

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Section: Systematic Paleobotanymentioning

confidence: 99%

Exceptionally well‐preserved seed cones of a new fossil species of hemlock, Tsuga weichangensis sp. nov. (Pinaceae), from the Lower Miocene of Hebei Province, North China

Gee

Tan

et al. 2023

J of Sytematics Evolution

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A New Fossil Species of Nothotsuga from the Mula Basin, Litang County, Sichuan Province and Its Paleoclimate and Paleoecology Significance

Jia

Li²,

Gao³

et al. 2022

Biology

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In this paper, we describe a new fossil species, Nothotsuga mulaensis Z. Li & J.L. Dong sp. nov. The discovery of the fossil species was based on well-preserved fossil seed cones that were found in the Mula Basin in Xiamula village, Litang County, Sichuan Province, southwestern China. The shapes of these fossils were characterized by ovate seed cones, rhombic or suborbicular scales with auriculate bases, and the bracts were ligulate-spathulate in shape. This finding suggests that Nothotsuga once had a wide distribution range in China and that it also inhabited the eastern Tibetan Plateau (TP). Nothotsuga mulaensis was distributed in an intermountain lake basin, at altitudes from 2000 to 2300 m, in a warm and humid environment. This finding also suggests that the eastern TP may have provided good habitat for Nothotsuga during the Miocene. In addition, we propose that the uplift, accompanied by the severe cooling and aridification that occurred after the Miocene, caused the disappearance of this species of Nothotsuga in the eastern TP.

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Cathaya vanderburghii, a misnomer for European Neogene fossil cones

Cited by 2 publications

References 16 publications

Exceptionally well‐preserved seed cones of a new fossil species of hemlock, Tsuga weichangensis sp. nov. (Pinaceae), from the Lower Miocene of Hebei Province, North China

Exceptionally well‐preserved seed cones of a new fossil species of hemlock, Tsuga weichangensis sp. nov. (Pinaceae), from the Lower Miocene of Hebei Province, North China

A New Fossil Species of Nothotsuga from the Mula Basin, Litang County, Sichuan Province and Its Paleoclimate and Paleoecology Significance

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