WASHINGTON (Reuters) – For extinct creatures like dinosaurs known only from fossils, it is notoriously difficult to differentiate the males from the females of a species because sex distinctions are …read more
Source:: UKScienceNews
WASHINGTON (Reuters) – For extinct creatures like dinosaurs known only from fossils, it is notoriously difficult to differentiate the males from the females of a species because sex distinctions are …read more
Source:: UKScienceNews