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Leaves of Podozamites and Pseudotorellia from the Early Cretaceous of Mongolia: stomatal patterns and implications for relationships
Shi, Gongle (史恭乐)1; Herrera, Fabiany2; Herendeen, Patrick S.2; Leslie, Andrew B.3; Ichinnorov, Niiden4; Takahashi, Masamichi5; Crane, Peter R.6,7
2018
Source PublicationJOURNAL OF SYSTEMATIC PALAEONTOLOGY
ISSN1477-2019
Volume16Issue:2Pages:111-137
Abstract

Strap-shaped, parallel-veined leaves of Podozamites and Pseudotorellia are among the most common fossils in Late Triassic to Early Cretaceous floras from the Northern Hemisphere. Podozamites is considered to be the leaf of a voltzian conifer, but its cuticle is poorly known, whereas Pseudotorellia, with a thick cuticle and haplocheilic stomata, is commonly considered to be the leaf of a ginkgoalean. Here we describe the leaf morphology, cuticle and stomata of Podozamites and Pseudotorellia based on excellently preserved material from the Early Cretaceous of central Mongolia. Podozamites harrisii sp. nov. has transversely oriented, paracytic (probably syndetocheilic) stomata that are regularly arranged in longitudinal files. Pseudotorellia resinosa sp. nov. and Pseudotorellia palustris sp. nov. have scattered, longitudinally oriented stomata in which the two guard cells are sunken and surrounded by 2-5 specialized lateral subsidiary cells and 1-3 unspecialized polar cells. Association evidence and similarities in cuticular structure suggest that Podozamites harrisii was produced by the same plant as the seed cone Krassilovia. The distinctive stomatal pattern of Podozamites harrisii and Krassilovia is also seen in some species of Swedenborgia and Cycadocarpidium, suggesting these plants may all belong to the same natural group. Cycadocarpidium, Krassilovia and Swedenborgia have previously been treated as conifers, but their transversely oriented, paracytic stomata hint instead at a possible relationship with Bennettitales and Gnetales.

KeywordEarly Cretaceous Paracytic Stoma Podozamites Voltzian Pseudotorellia Ginkgo
DOI10.1080/14772019.2016.1274343
Language英语
WOS KeywordFlorin Ginkgoales ; Sp-nov ; Classification ; Cupressaceae ; Kazakstan ; Evolution ; Pinaceae ; Conifers ; Plants
Funding ProjectNSF[DEB-1348456] ; Japan Society for the Promotion of Science[21405010] ; Japan Society for the Promotion of Science[24405015] ; National Natural Science Foundation of China[41206173] ; Youth Innovation Promotion Association, CAS[2017359]
WOS Research AreaEvolutionary Biology ; Paleontology
WOS SubjectEvolutionary Biology ; Paleontology
WOS IDWOS:000424061400002
Funding OrganizationNSF ; Japan Society for the Promotion of Science ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/18778
Collection中国科学院南京地质古生物研究所
Corresponding AuthorShi, Gongle (史恭乐)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chicago Bot Garden, 1000 Lake Cook Rd, Glencoe, IL 60022 USA
3.Brown Univ, Dept Ecol & Evolutionary Biol, Providence, RI 02912 USA
4.Mongolian Acad Sci, Paleontol Ctr, POB 260, Ulaanbaatar 51, Mongol Peo Rep
5.Niigata Univ, Dept Environm Sci, Fac Sci, Nishi Ku, 8050,2 Cho, Niigata 9502181, Japan
6.Yale Univ, Sch Forestry & Environm Studies, 195 Prospect St, New Haven, CT 06511 USA
7.Oak Spring Garden Fdn, Upperville, VA 20184 USA
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Shi, Gongle ,Herrera, Fabiany,Herendeen, Patrick S.,et al. Leaves of Podozamites and Pseudotorellia from the Early Cretaceous of Mongolia: stomatal patterns and implications for relationships[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2018,16(2):111-137.
APA Shi, Gongle .,Herrera, Fabiany.,Herendeen, Patrick S..,Leslie, Andrew B..,Ichinnorov, Niiden.,...&Crane, Peter R..(2018).Leaves of Podozamites and Pseudotorellia from the Early Cretaceous of Mongolia: stomatal patterns and implications for relationships.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,16(2),111-137.
MLA Shi, Gongle ,et al."Leaves of Podozamites and Pseudotorellia from the Early Cretaceous of Mongolia: stomatal patterns and implications for relationships".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 16.2(2018):111-137.
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