Final answer:
The first hominid species widely distributed in the Old World was Homo erectus, which evolved around 1.9 million years ago and showcased advanced behaviors like the use of fire and hunting.
Step-by-step explanation:
The first hominid species to be widely distributed in the Old World was Homo erectus. This species first evolved about 1.9 million years ago in East Africa and was the pioneer in migrating out of Africa, reaching Eurasia and eventually becoming distributed across India, China, Java, and Europe. Homo erectus was larger in size and had a greater brain capacity compared to its predecessors, like Homo habilis, which had a smaller brain and retained some archaic features. Homo erectus also displayed more advanced behaviors, such as the use of fire and hunting, setting the stage for future human development.
The emergence of Homo erectus marked a significant evolutionary advancement in hominin species, with critical implications for human evolution. Its adaptability and eventual widespread distribution across the Old World highlight the species' significance in our ancestral lineage.