The earliest fossil evidence of the Hamamelidaceae: Late Cretaceous (Turonian) inflorescences and fruits of Altingioideae

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 中国科学院东亚植物多样性与生物地理学重点实验室

	The earliest fossil evidence of the Hamamelidaceae: Late Cretaceous (Turonian) inflorescences and fruits of Altingioideae
	Zhou, ZK; Crepet, WL ; Nixon, KC
刊名	AMERICAN JOURNAL OF BOTANY
	2001-05-01
卷号	88 期号:5 页码:753-766
关键词	Altingioideae Cretaceous Hamamelidaceae Mosaic Turonian
ISSN号	0002-9122
文献子类	Article
英文摘要	Fossilized pistillate inflorescences, fruits, and pollen grains from the Turonian (similar to 90 million years before present) of New Jersey are described as a new genus, Microaltingia, in the family Hamamelidaceae. The fossils are remarkably preserved in exceptional detail. Several morphological and anatomical characters suggest affinities with Hamamelidaceae. These include capitate inflorescences, florets with a hypanthium, two-carpellate gynoecia, perigynous flowers, tricolpate reticulate pollen, a three-layered carpel wall, scalariform perforation plates with oblique end walls, and scalariform and opposite/alternate intervascular pitting. The gross morphology of pistillate inflorescences, unisexual flowers, phyllome structure, numerous ovules per carpel, and mode of carpel dehiscence indicate affinities with subfamily Altingioideae, which includes the modern genera Liquidambar and Altingia. Cladistic analysis using a previously published morphological matrix and scoring the fossil for available characters supports the position of the fossil as a sister taxon of modern Altingioideae. Although the fossil exhibits a mosaic of characters found within modem Hamamelidaceae, it is not identical to any modern taxon. Based on cladistic analysis, the fossil appears to be a basal "altingioid" that lacks the derived pollen found in extant Altingioideae and retains the more plesiomorphic tricolpate pollen found in the rest of Hamamelidaceae. The floral characters of the fossils, including phyllomes with stomata, short and straight styles, and small perprolate pollen grains, also indicate the possibility of insect pollination.
学科主题	Plant Sciences
WOS关键词	NEW-JERSEY ; ANGIOSPERM FLOWERS ; EVOLUTION ; MORPHOLOGY ; PHYLOGENY ; AFFINITY ; ANATOMY ; POLLEN ; SWEDEN
WOS研究方向	Plant Sciences
语种	英语
WOS记录号	WOS:000168768900002
公开日期	2012-01-05
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn:8080/handle/151853/3247]
专题	昆明植物研究所_中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China 2.Cornell Univ, LH Bailey Hortorium, Ithaca, NY 14853 USA
推荐引用方式 GB/T 7714	Zhou, ZK,Crepet, WL,Nixon, KC. The earliest fossil evidence of the Hamamelidaceae: Late Cretaceous (Turonian) inflorescences and fruits of Altingioideae[J]. AMERICAN JOURNAL OF BOTANY,2001,88(5):753-766.
APA	Zhou, ZK,Crepet, WL,&Nixon, KC.(2001).The earliest fossil evidence of the Hamamelidaceae: Late Cretaceous (Turonian) inflorescences and fruits of Altingioideae.AMERICAN JOURNAL OF BOTANY,88(5),753-766.
MLA	Zhou, ZK,et al."The earliest fossil evidence of the Hamamelidaceae: Late Cretaceous (Turonian) inflorescences and fruits of Altingioideae".AMERICAN JOURNAL OF BOTANY 88.5(2001):753-766.