chronospecies

views updated Jun 08 2018

chronospecies
1. (evolutionary species) According to one view of evolution (that of phyletic gradualism), a new organism, or one of a series of new organisms, derived from an ancestor by a process of slow, steady, evolutionary change.

2. A fossil species that occurs in strata formed at different times.

3. See palaeospecies.

chronospecies

views updated May 08 2018

chronospecies (evolutionary species) According to one view of evolution (that of phyletic gradualism), a new organism may be derived from its ancestor by a process of slow, steady evolutionary change. Conceivably, the descended organism might not be regarded as a member of the same species as its ancestor, in which case it would constitute a new species, in particular a chronospecies.

chronospecies

views updated Jun 11 2018

chronospecies (evolutionary species) According to one view of evolution (that of phyletic gradualism), a new organism may be derived from its ancestor by a process of slow, steady evolutionary change. Conceivably, the descended organism might not be regarded as a member of the same species as its ancestor, in which case it would constitute a new species, in particular a chronospecies.

chronospecies

views updated Jun 11 2018

chronospecies (evolutionary species) According to one view of evolution (phyletic gradualism), a group of organisms that is derived from its ancestor by a process of slow, steady, evolutionary change and is not regarded as a member of the same species as its ancestor.