This change in the choice of birthing twins to birthing singletons happened multiple times across the primate lineage. This was an instance that was flagged by researchers as an unavoidable sign ...

Our new research also shows that the switch from birthing twins to birthing singletons happened multiple times in the primate lineage – a telltale signal that it was advantageous for primates to ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Our recent research suggests that twins were actually the norm much further back ...

Furthermore, the switch from twin births to single births appears to have occurred multiple times within the primate lineage, suggesting that there may have been some evolutionary advantage to ...

In the early Miocene, primates found in Africa and the Arabian ... These developments allowed the nascent hominoid lineage to branch off and colonize newly available Eurasian habitats, leading ...