Morphology, affinities and phytogeographic history of Porosia Hickey in the Cretaceous and Paleocene of North America and Asia
More details
Hide details
Florida Museum of Natural History, Gainesville Florida, 32611-7800, USA
Geological Institute, Russian Academy of Sciences, Pyzhevskii per., Moscow, 119017 Russia
Online publication date: 2014-06-17
Publication date: 2014-06-17
Acta Palaeobotanica 2014; 54(1): 77-99
Morphology and anatomy of the extinct angiosperm fruit, Porosia verrucosa (Lesqueruex) Hickey, are documented in detail based on various modes of preservation including molds, casts, and permineralizations from more than seventy localities in the late Cretaceous and Paleocene. The fruits are schizocarpic with paired unilocular, single-seeded mericarps seated on a prominent gynophore with an hypogynous perianth borne on a long pedicel. The most distinctive feature of these fruits is the regularly spaced cylindrical intrusions over the surface of the endocarp. These are interpreted to represent oil cavities similar to those common in the fruits of extant Rutaceae. The oldest known occurrences of P. verrucosa are from the Late Cretaceous (Campanian to Maastrichtian) of western North America, but the genus traversed Beringia and became widespread in the Paleocene both in Asia (Kazakhstan, Amur Region, and Koryak Highlands), and North America (Montana, North Dakota, Wyoming, Colorado, Oregon, Washington, Alberta, Saskatchewan). It extended to the late Paleocene in the Rocky Mountain and Great Plains region, and appears to have become extinct near the Paleocene-Eocene boundary.
New findings of seeds and fruits from Cenomanian–Turonian deposits of Western Siberia
A. Hvalj
Oligocene Limnobiophyllum (Araceae) from the central Tibetan Plateau and its evolutionary and palaeoenvironmental implications
Shook Low, Tao Su, Teresa Spicer, Fei-Xiang Wu, Tao Deng, Yao-Wu Xing, Zhe-Kun Zhou
Journal of Systematic Palaeontology
Early Paleogene Boguchan flora of the Amur Region (Russian Far East): Composition, age and palaeoclimatic implications
Maria Moiseeva, Tatiana Kodrul, Alexei Herman
Review of Palaeobotany and Palynology
A New Assemblage of Plant Mesofossils (Late Turonian–Middle Santonian; Upper Cretaceous) from the Tamagawa Formation, Kuji Group, in Northeastern Japan
Masamichi Takahashi, Patrick Herendeen, Fabiany Herrera, Ren Hirayama, Hisao Ando, Kazuhisa Sasaki, Peter Crane
Paleontological Research
Mexican ceratopsids: Considerations on their diversity and biogeography
Héctor Rivera-Sylva, Eberhard Frey, Wolfgang Stinnesbeck, José Guzmán-Gutiérrez, Arturo González-González
Journal of South American Earth Sciences
Phytopathology in fossil plants: New data, questions of classification
N. Maslova, D. Vasilenko, T. Kodrul
Paleontological Journal
The Late Cretaceous floras of the Zeya-Bureya Basin
L. Golovneva, T. Kodrul, E. Bugdaeva
The Paleocene Horse Creek florule, Tongue River Member of the Fort Union Formation, southeastern Montana, USA
Steven Manchester, Foster, Lott
Acta Palaeobotanica
Patterns of variation in fleshy diaspore size and abundance from Late Triassic–Oligocene
Duhita Naware, Roger Benson
Biological Reviews
Journals System - logo
Scroll to top