|
|
|
Registros recuperados: 41 | |
|
| |
|
| |
|
|
Bellan-santini, D; Dauvin, J. |
In the world, the Ampelisca genus is constituted by more than 140 species, which are found between 0 to 4000 m depth. Phylogeny, biology and ecology are the most important interest in this genus. The present analysis of new and older collections (E. Chevreux) have permitted to describe 11 new species. 41 species are listed in the north-eastern Atlantic fauna. These are different arguments to think that Ampelisca groups was actually in speciation. Two groups issued from a phenetic analysis are discriminated by their apomorphic levels. More than of the third are endemic species. 21 species are present only in one of the five biogeographic region. 23 species are limited to the continental shelf, 34 live up to the first 1000 meters and 4 are bathyal. 2 species... |
Tipo: Text |
Palavras-chave: Ampeliscidae; Malacostraca; Biological collections; Phylogeny; Biogeography. |
Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/1987/acte-1403.pdf |
| |
|
| |
|
| |
|
| |
|
| |
|
|
Sepkoski Jr., J. John. |
Approximately 2,600 genera of marine crustaceans have been recognized in the fossil record, and crustaceans constitute the major component of marine arthropod diversity from the mid-Paleozoic to the Recent. Despite problems of sporadic fossil preservation and/or taxonomic ambiguity, some general statements can be made about the history of crustacean biodiversity, based on global taxonomic data bases. Ostracodes were the first major group to radiate, attaining high diversity during the Ordovician Period with other members of the Paleozoic evolutionary fauna; rates of extinction and responses to mass extinctions were also similar to those of groups within the Paleozoic fauna. Malacostracans and barnacles (cirripedes), the two other crustacean groups with... |
Tipo: Article / Letter to the editor |
Palavras-chave: Crustacean biodiversity; Marine fossil record; Extinction rates; Ostracoda; Malacostraca; Cirripedia. |
Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/534399 |
| |
|
| |
|
| |
|
| |
|
| |
Registros recuperados: 41 | |
|
|
|