| They occur frequently in Gulfei and Affade, infrequently in Makari, but not at all in the closely related Logone. |
| In such cases each member acts as the allelomorph of any other member, and only two can occur in any one female, and only one in any male. |
| He describes how the movements of the jaw occur around a region in the upper cervical spine, namely around the atlanto-axial joint. |
| Bird strikes, also referred as Avian ingestion when sucked into the plane's engine, commonly occur during takeoff and landing. |
| Among the flatfish, bothids are mainly found in deeper, less muddy situations while cynoglossids occur in shallower muddy areas. |
| Because they are scavengers in a semiarid ecosystem where carrion is often limited, brown hyenas naturally occur in small numbers. |
