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Table 1 A comparison of morphological characters between Jianchangia and other gnetalean macrofossils from northeastern China

From: A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern China

TaxonLocalityFormationLeavesBract presentBract whorlsBract positionBract shapeLiterature
AlloephedraYanji Basin, Jilin Province, ChinaDalazi Formation, Aptian-Albian, Lower Cretaceousovate-triangularyes2pairedmodifiedTao & Yang 2003 [48]
BeipiaoaHuangbanjigou, Shangyuan, Beipiao, Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceous-yes1pairedmodified, spinose or acuteSun & al. 2001 [47]
ChengiaDawangzhangzi, Lingyuan, Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceouslinearyes4-8pairedmodifiedYang & al. 2013 [16]
ConstrobilusBeipiao, Liaoning ProvinceJianshangou Bed, Barremian, Lower Cretaceouspetiolate, broad ovate, pinnately veinedyes1pairedmodifiedLiu & al. 2013 [43]
Ephedra archaeorhytidospermaHuangbanjigou, Shangyuan, Beipiao, Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceousacute, triangular?yes1(-2?)pairedmodified, acuteYang & al. 2005 [51]
E. carnosaHuangbanjigou, Shangyuan, Beipiao, Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceous-yes1paired or ternately whorledmodified, fleshyYang & Wang 2013 [54]
E. hongtaoiDawangzhangzi, Lingyuan, Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceous-yes1pairedmodifiedWang & Zheng
E. multinerviaDawangzhangzi Village, Songzhangzi Town, Lingyuan City, Chaoyang District, Liaoning Province, ChinaDaxinfangzi Bed, Yixian Formation, Barremian, Lower Cretaceouslong, strap-shaped, having multiple parallel veinsyes1pairedmodifiedYang & al. 2015 [52]
GurvanellaChaoyang, Liaoning, China; MongoliaYixian Formation, equivalent to the Barremian, Lower Cretaceouslinear, having 2(?) parallel veinsyes1ternately whorledmodified with profusely branched veinsSun & al. 2001 [47]
JianchangiaLamadong Village, Jianchang County, Liaoning Province, northeastern ChinaJiufotang Formation, Aptian, Lower Cretaceouslinear, parallel-veinedyes2verticillatelinear, leaf-likeThis study
Latibracteanear Beipiao, Liaoning ProvinceJianshangou Bed, Barremian, Lower Cretaceousleaves petiolate, divided, parallel-veinedyes3 or 4pairedmodifiedLiu & al. 2013 [43]
Liaoxia cheniaeShangyuan Village of Beipiao, Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceouslinear, parallel-veinedyes2-6pairedmodifiedRydin & al. 2006 [26, 46]
PrognetellaHuangbanjigou, Shangyuan, Beipiao, Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceouslinear, having 2-4 parallel veinsyes, in reproductive shoots but not in typical cone-pairedleaf-likeYang & Ferguson 2015 [15]
Protognetum jurassicumDaohugou, Ningcheng County, Chifeng City, Inner Mongolia Autonomous Region, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceouslinearyes2pairedlinear, leaf-likeYang & al. 2017 [1, 59]
PseudoephedraDawangzhangzi Village, Lingyuan City, Liaoning Province, ChinaYixian Formation, Barremian–Aptian, Lower Cretaceouslinearprobably no---Liu & Wang 2016 [44]
Siphonospermum simplexJianshangou, Beipiao, Chaoyang City, west Liaoning, ChinaYixian Formation, equivalent to the Barremian, Lower Cretaceouslinear, having 3 parallel veinedno---Rydin & Friis 2010 [45]
Spinobracteanear Beipiao, Liaoning ProvinceJianshangou Bed, Barremian, Early Cretaceousbroadly lanceolate, forked venationyes2-4pairedlanceolateLiu & al. 2013 [43]