Schenkeriphyllum glanduliferum, a new magnolialean angiosperm from the Early Cretaceous of Northern Gondwana and its relationships to fossil and modern Magnoliales

被引：38

作者：

Mohr, Barbara A. R. ^{[1
]}

Coiffard, Clement ^{[1
]}

Bernardes-de-Oliveira, Mary E. C. ^{[2
,3
]}

机构：

[1] Humboldt Univ, Museum Nat Kunde, Abt Sammlungen, D-10115 Berlin, Germany

[2] Univ Guarulhos, CEPPE Post Grad & Res Ctr, BR-07023070 Guarulhos, SP, Brazil

[3] Univ Sao Paulo, Inst Geosci, BR-05508080 Sao Paulo, Brazil

来源：

REVIEW OF PALAEOBOTANY AND PALYNOLOGY | 2013年 / 189卷

关键词：

angiosperm; Early Cretaceous; Magnoliales; phylogeny; Crato Formation; Brazil; CRATO FORMATION; PHYLOGENETIC ANALYSIS; BASAL ANGIOSPERMS; EVOLUTION; FLOWERS; PLANT; STAMINODES; ONTOGENY; GEN;

D O I：

10.1016/j.revpalbo.2012.08.004

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A fossil angiosperm from the Aptian Crato Formation (Brazil), Schenkeriphyllum glanduliferum n. gen. n. sp. is described and phylogenetically analyzed. The taxon consists of branching axes with attached simple sessile, sheathing, narrowly ovate glanduliferous leaves with ethereal oil cells and solitary axillary medium sized flowers. Several of the multiparted flowering structures are reasonably well preserved in differing stages of maturity. Broad obovate tepals, (stamens?), glanduliferous staminodes (more than 30?) and free carpels are arranged on a flat to slightly convex receptacle. The gynoecium consists of ca. 12 to 20 free carpels. Among recent Magnoliales only Magnoliaceae share many characters of the flowering structures with Schenkeriphyllum. A phylogenetic analysis confirms that Schenkeriphyllum represents most likely a sister taxon to Endressinia for which the diagnosis is slightly emended. Both fossil taxa may represent together a sister clade to extant Magnoliaceae. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：57 / 72

页数：16

共 61 条

[1]

[Anonymous], 2005, PHYLOGENY EVOLUTION

[2]

[Anonymous], 1993, FAMILIES GENERA VASC

[3] Early angiosperm diversification: evidence from southern South America [J].

Archangelsky, Sergio ;

Barreda, Viviana ;

Passalia, Mauro G. ;

Gandolfo, Maria ;

Pramparo, Mercedes ;

Romero, Edgardo ;

Cuneo, Ruben ;

Zamuner, Alba ;

Iglesias, Ari ;

Llorens, Magdalena ;

Puebla, Gabriela G. ;

Quattrocchio, Mirta ;

Volkheimer, Wolfgang .

CRETACEOUS RESEARCH, 2009, 30 (05) :1073-1082

[4] FUNCTIONS OF STAMINODIA IN THE BEETLE-POLLINATED FLOWERS OF EUPOMATIA-LAURINA [J].

ARMSTRONG, JE ;

IRVINE, AK .

BIOTROPICA, 1990, 22 (04) :429-431

[5]

Barreto A.M.F., 2000, GEOCIENCIAS, V5, P121

[6] Fleshy fruits - origins, niche shifts, and diversification [J].

Bolmgren, K ;

Eriksson, O .

OIKOS, 2005, 109 (02) :255-272

[7] Myristicineae, a new suborder within Magnoliales [J].

Chatrou, LW .

TAXON, 2003, 52 (02) :277-279

[8]

Coiffard C., TAXON IN PRESS

[9]

Crane P.R., 1991, SANTANA FOSSILS ILLU

[10] THE ORIGIN AND EARLY DIVERSIFICATION OF ANGIOSPERMS [J].

CRANE, PR ;

FRIIS, EM ;

PEDERSEN, KR .

NATURE, 1995, 374 (6517) :27-33

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