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A new species of Stutzeliastrobus (Cupressaceae) from the Early Cretaceous of the Guyang Basin, northern China, and its paleoenvironmental implications
The Key Laboratory of Mine Geological Disaster Prevention of Anhui Province, School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China.
The Key Laboratory of Mine Geological Disaster Prevention of Anhui Province, School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China.
The Key Laboratory of Mine Geological Disaster Prevention of Anhui Province, School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China.
The Key Laboratory of Mine Geological Disaster Prevention of Anhui Province, School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China.
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2025 (English)In: Review of Palaeobotany and Palynology, ISSN 0034-6667, E-ISSN 1879-0615, Vol. 339, p. 105353-105353, article id 105353Article in journal (Refereed) Published
Abstract [en]

A cupressaceous conifer, Stutzeliastrobus araucarioides comb. nov. is described from the Lower Cretaceous Guyang Formation in the Guyang Basin, central Inner Mongolia, northern China. Stutzeliastrobus araucarioides is known based on well-preserved leafy shoots with attached ovuliferous cones, and is characterized by elongate ovuliferous cones with numerous helically arranged, flat cone-scale complexes. Each complex is composed of a fused bract and ovuliferous scale and bears two seeds on the proximal to middle region. Stutzeliastrobus araucarioides is most similar in gross morphology to extant Taiwania cryptomerioides, but differs by having many more bract-scale complexes per cone. The features of S. araucarioides confirm that Stutzeliastrobus is closely relared to Taiwania. The new material enriches the fossil record of Stutzeliastrobus and adds to knowledge of the diversity of early Cupressaceae from the Early Cretaceous. Associated fossils and sedimentary facies indicate that S. araucarioides occupied lacustrine-paludal environments that hosted a diverse range of conifers and ginkgoaleans.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2025. Vol. 339, p. 105353-105353, article id 105353
Keywords [en]
Stutzeliastrobus, Conifers, Taiwania, Inner Mongolia, Early Cretaceous, Guyang Basin
National Category
Palaeontology and Palaeoecology
Research subject
The changing Earth
Identifiers
URN: urn:nbn:se:nrm:diva-6032DOI: 10.1016/j.revpalbo.2025.105353OAI: oai:DiVA.org:nrm-6032DiVA, id: diva2:2013924
Funder
Swedish Research Council, 2022-03920
Note

This study is financially supported by the Open Foundation of the Key Laboratory of Mine Geological Disaster Prevention of Anhui Province [No. 2023-MGDP-01] and the National Natural Science Foundation of China [No. 31700185]. S. McLoughlin is funded by a Swedish Research Council (Vetenskapsrådet) grant (2022-03920).

Available from: 2025-11-14 Created: 2025-11-14Bibliographically approved

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Publisher's full texthttps://www.sciencedirect.com/science/article/pii/S0034666725000740

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