Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
diachroni  |
|---|
| diachronism | |
|---|---|
| UF | heterochrony |
| RT | biologic evolution |
| paleoecology | |
| stratigraphy | |
| biostratigraphy | |
| ontogeny | |
| SN | Concept is used for the appearance of a flora or fauna in a new region during a time period significantly different from the time when it inhabited the old region. |