Major patterns in the fossil record revealed by the Paleobiology Database
18/12/2004 00:00 | Durée 00:15:28

Intervenants : John Alroy , Paleobiology Database, NCEAS, university of California, Santa Barbara .  

The Paleobiology Database is a public resource for the scientific community. It has been organized and operated by a multi-disciplinary, multi-institutional, international group of paleobiological researchers. Its purpose is to provide global, collection-based occurrence and taxonomic data for marine and terrestrial animals and plants of any geological age, as well as web-based software for statistical analysis of the data. The project's wider, long-term goal is to encourage collaborative efforts to answer large-scale paleobiological questions by developing a useful database infrastructure and bringing together large data sets. The Database currently includes six main tables: references, taxonomic names, taxonomic opinions, primary collection data, taxonomic occurrences, and reidentifications of occurrences. The tables are tied together relationally with record ID numbers. Most tables are relatively simple; the collection table has many fields that are described on a separate database structure page. We are working to add tables that will handle taxonomic authority information and taxonomic opinions (e.g., synonymies). At a later date we will add tables to handle phylogenetic relationships, ecomorphological attributes, stratigraphic sections, radioisotopic age estimates, and other data. Some of the major datasets within the Paleobiology Database includes: -North American Mammalian Paleofaunal Database 2002 -Middle Devonian fossils of the Michigan Basin -Taxonomy and distribution of Late Jurassic - Eocene lissamphibians -Jurassic marine faunas of France, Greenland, Portugal, and the United Kingdom -Silurian and Early Devonian plants 2001 -Ivany Thesis Collection: Middle Eocene US Gulf Coast Macrofossils -Maastrichtian bivalve faunas of the world 1994 -Marine Bivalve Genera, Revision of Sepkoski's Compendium -Upper Cretaceous larger invertebrate fossils from the Haustator bilira zone of the Atlantic and Gulf Coastal Plains -Ordovician marine faunas of the world -Pennsylvanian-Permian Marine Benthos of the North American Midcontinent -PGAP's Permian, Triassic and Jurassic terrestrial megafloras of the world -Paleozoic marine faunas from the paleocontinent of Laurentia 1992 -Carboniferous terrestrial floras of North America and Europe -Late Paleocene - early Eocene macrofloras of southwestern Wyoming 2000.