A monophyletic group can be separated from the root with a single cut, whereas a non-monophyletic group needs two or more cuts.

These narrower communities are defined as assemblages, species that share an attribute of habitat or taxonomic similarity, or taxon. Multiple communities might be spread across an area.

During that time, countless fossils have been unearthed, but it wasn’t until this past April that a discovery of a rare ‘Lazarus Taxon’ – two carpoid fossils – made a singular impact ...

WYNDD uses a standardized ranking system coordinated by NatureServe to indicate the probability of extirpation, at both the global and state scales, of each plant and animal taxon. The following ...