Write the names of the following
(a) A 15 mya primate that was ape like,
(b) A 2 mya primate that lived in east African grasslands

Explanation

**Step-by-Step Solution:**

1. **Identify the First Primate:**
- The question asks for a 15 million-year-old primate that was ape-like.
- Based on fossil evidence, two significant primates from this time period are known: Ramapithecus and Dryopithecus.

2. **Determine the Characteristics:**
- Dryopithecus is recognized for being more ape-like compared to Ramapithecus, which is considered more human-like.
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