Evaluating the taxonomy of macrofossils used in macroevolution: a case study of Artemisia (Asteraceae)

BO-HAN JIAO; LI-LI LU; CHEN CHEN; MENG WEI; JIA-HAO SHEN; YUAN YUAN; YU-FEI WANG; TIAN-GANG GAO

doi:10.11646/phytotaxa.572.1.8

Issue: Vol. 572 No. 1: 8 November 2022

Type: Article

Published: 2022-11-08

DOI: 10.11646/phytotaxa.572.1.8

Page range: 107-114

Abstract views: 51

PDF downloaded: 4

**Evaluating the taxonomy of macrofossils used in macroevolution: a case study of Artemisia (Asteraceae)**

BO-HAN JIAO⁺⁻
LI-LI LU⁺⁻
CHEN CHEN⁺⁻
MENG WEI⁺⁻
JIA-HAO SHEN⁺⁻
YUAN YUAN⁺⁻
YU-FEI WANG⁺⁻
TIAN-GANG GAO⁺⁻

State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun Xiangshan, Beijing 100093, China. University of Chinese Academy of Sciences, Beijing 100049, China.

State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun Xiangshan, Beijing 100093, China. University of Chinese Academy of Sciences, Beijing 100049, China. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing, 210014, China.

National Resource Center for Chinese Meteria Medica, Chinese Academy of Chinese Medical Sciences, 100700, Beijing, China

State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun Xiangshan, Beijing 100093, China. University of Chinese Academy of Sciences, Beijing 100049, China.

Artemisia comparative morphology fossil identity phylogeny Eudicots

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Abstract

Fossils recorded information of the past phenotype and geographic distribution directly. Incorporating fossils information into phylogenies of living taxa would deepen our understanding of their macroevolution. Accurate taxonomy of these fossils is the first step before employing them. However, the taxonomy of some fossils has not been evaluated carefully. Here we take Artemisia as an example. We investigated the morphology of all the available Artemisia macrofossils based on the latest phylogeny and evaluated their taxonomic identities by comparing them with extant representative species. Our result showed that the taxonomic identities of these macrofossils are doubted. They would better not be treated as members of Artemisia for subsequent phylogenetic or biogeographic studies. This study improves our knowledge of the morphology of Artemisia, highlights the importance of careful morphological comparisons between fossils and living taxa, and reveals that attention should be given to the uncertainty of the fossil taxonomy.

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