Early angiosperms from the lower Cretaceous Crato Formation (Brazil), a preliminary report

被引:97
作者
Mohr, BAR
Friis, EM
机构
[1] Museum Hist Nat, Dept Palaeontol, D-10115 Berlin, Germany
[2] Swedish Museum Nat Hist, S-10405 Stockholm, Sweden
关键词
fossil angiosperms; magnoliids; Early Cretaceous; Crate Formation; Brazil;
D O I
10.1086/317580
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Early Cretaceous angiosperm remains from the Gondwana Continent were hitherto very rare. The Aptian or Albian Crate Formation (Brazil) contains various angiosperm fossils, mainly detached leaves, but there are also impression fossils with organically connected parts. These include stems with attached leaves and sometimes reproductive structures, several follicular structures that occur both isolated and attached to their axes, and a few complete plants, probably mostly aquatics, with adhering roots, stems, leaves, and reproductive structures. This presentation is intended to give the first overview of the angiosperm diversity in structural and organizational terms of these angiosperms from northern Gondwana during the late Early Cretaceous; detailed descriptions and analyses of these taxa will be given later. Diversity is reasonably high, with close to 20 taxa. Most of these taxa might belong to the magnoliid clade, and basal eudicots might have occurred at this locality as well.
引用
收藏
页码:S155 / S167
页数:13
相关论文
共 63 条
[1]  
[Anonymous], 1990, AT 1 S BAC AR BAC IN
[2]   THE ULTRASTRUCTURE OF IN-SITU CLAVATIPOLLENITES POLLEN FROM THE EARLY CRETACEOUS OF PATAGONIA [J].
ARCHANGELSKY, S ;
TAYLOR, TN .
AMERICAN JOURNAL OF BOTANY, 1993, 80 (08) :879-885
[3]  
Bechly Gunter, 1998, Stuttgarter Beitraege zur Naturkunde Serie B (Geologie und Palaeontologie), V264, P1
[4]  
Beurlen K., 1962, AN ACAD BRAS CIENC, V34, P365
[5]  
Brenner Gilbert J., 1996, P91, DOI 10.1007/978-0-585-23095-5_5
[6]   EARLY AND MIDDLE CRETACEOUS ANGIOSPERM POLLEN GRAINS FROM AUSTRALIA [J].
BURGER, D .
REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 1993, 78 (3-4) :183-234
[7]  
Burger D., 1970, BUREAU MINERAL RESOU, V116, P1
[8]   BROAD LEAFED CONIFEROUS FOLIAGE FROM THE LOWER CRETACEOUS OTWAY GROUP, SOUTHEASTERN AUSTRALIA [J].
CANTRILL, DJ .
ALCHERINGA, 1991, 15 (3-4) :177-190
[9]   Taxonomy and palaeoecology of Early Cretaceous (Late Albian) angiosperm leaves from Alexander Island, Antarctica [J].
Cantrill, DJ ;
Nichols, GJ .
REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 1996, 92 (1-2) :1-28
[10]   ANGIOSPERM DIVERSIFICATION AND PALEOLATITUDINAL GRADIENTS IN CRETACEOUS FLORISTIC DIVERSITY [J].
CRANE, PR ;
LIDGARD, S .
SCIENCE, 1989, 246 (4930) :675-678