Which of the following statements is incorrect?

Options

A. Jawless fish probable evolved around 350 mya.
B. Tyrannosaurus rex was biggest dinousaur, about 20 feet in height and had huge fearsome dagger-like teeth.
C. About 15 mya, primates called Dryoptihecus and Rampaithacus existed.
D. Australopithecus with a brain size if 1400 c.c. lived in East and Central Asia between 1,00,000-40,000 years back.

Explanation

To determine which statement is incorrect, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A: Jawless fish evolved around 350 million years ago.**
- Analysis: Jawless fish are indeed among the earliest vertebrates, and they appeared during the Paleozoic era. The timeline of around 350 million years ago is accurate.
- Conclusion: This statement is **correct**.

2. **Statement B: Tyrannosaurus rex was the biggest dinosaur about 20 feet in height and had huge fearsome dagger-like teeth.**
- Analysis: The Tyrannosaurus rex (T-Rex) is well-known for being one of the largest carnivorous dinosaurs, reaching lengths of about 40 feet and heights of around 12 feet at the hips. The description of its teeth as fearsome and dagger-like is also accurate.
- Conclusion: This statement is **correct**.

3. **Statement C: About 15 million years ago, primates called Dryopithecus and Ramapithecus existed.**
- Analysis: Both Dryopithecus and Ramapithecus are indeed ancient primates that lived millions of years ago. They are considered to be close relatives of modern humans, with Dryopithecus being more ape-like and Ramapithecus being more human-like.
- Conclusion: This statement is **correct**.

4. **Statement D: Australopithecus with a brain size of 1400 cc lived in East and Central Asia between 100,000 to 40,000 years back.**
- Analysis: This statement is incorrect because it describes characteristics that are actually associated with the Neanderthal man, not Australopithecus. Australopithecus lived much earlier, around 3 million years ago, and had a smaller brain size (approximately 400-500 cc). Neanderthals, on the other hand, had a brain size of about 1400 cc and lived in Europe and parts of Asia.
- Conclusion: This statement is **incorrect**.

### Final Answer:
The incorrect statement is **Statement D**.

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