This paper identifies and discusses features of the classification of mammals that are relevant to the bibliographic classification of the subject. The tendency of zoological classifications to change; the differing sizes of groups of species; the use zoologists make of groupings other than taxa; and the links in zoology between classification and nomenclature, are identified as key themes the ...

Intricately decorated Lapita pottery (3100-2700 BP) was made and deposited by the prehistoric colonizers of Pacific islands, east of the main Solomon's chain. For decades, analyses of this pottery have focused on the ancestor-descendant relationships of populations and the relative degree of interaction across the region to explain similarities in Lapita decoration. Cladistic analyses, increasi...

We electrophoretically assayed 32 gene loci in the Sceloporus scalaris complex. We sampled 208 animals from 22 localities representing the following: Sceloporus aeneus (12 localities), S. bicanthalis (five localities), S. chaneyi (one locality), S. goldmani (one locality), and S. scalaris samcolemani (two localities), and we used Sceloporus parvus and S. variabilis as outgroups. Of the 32 gene ...

Two very different systems of classification of the family Polemoniaceaeone a taxonomic system and the other a molecular cladistic system-have appeared recently. They are compared and reviewed. It is emphasized that taxonomy and cladistics use different basic systematic units (taxa or clades) and have different concepts of monophyly. Furthermore, taxonomy and molecular cladistics differ in the ...

Freshwater crab sister group relationships with marine eubrachyuran families were investigated[ A morphology!based cladistic analysis was conducted on representatives of the freshwater crab families Deckeniidae\ Gecarcinucidae\ Parathelphusidae\ Potamidae\ Potamonautidae\ Pseudothelphusidae\ and Trichodactylidae using a disparate assemblage of marine heterotreme and thoracotreme brachyurans as ...

A cladistic analysis of the digger wasp subfamily Bembicinae based on morphological characters is presented. The underlying data matrix comprises 83 terminal taxa (coded on genus-level) and 64 morphological characters. The resulting strict consensus tree was used as the basis for a revised tribal and subtribal classification of the Bembicinae. Based on a previously published classification, we ...

Small-bodied, insectivorous Nyctitheriidae are known in the Palaeogene fossil record almost exclusively from teeth and fragmentary jaws and have been referred to Eulipotyphla (shrews, moles and hedgehogs) based on dental similarities. By contrast, isolated postcrania attributed to the group suggest arboreality and a relationship to Euarchonta (primates, treeshrews and colugos). Cretaceous-Palae...

Abstract The family Polymitarcyidae, with a worldwide distribution, includes mayflies large burrowing nymphs. South America harbors the highest diversity of this family, including subfamilies Asthenopodinae and Campsurinae. In work, three new species belonging to genera Tortopsis Tortopus (Campsurinae) are described based on adults nymphs from Colombia: toro sp. nov. , andaki coreguaje Addition...