Match the following columns.
Column I (Organism) | Column II (Connecting link) |
A. Echidna | 1. between Annelida and Mollusca |
B. Peripatus | 2. between Reptiles and Mammals |
C. Neopilina | 3. between Annelida and Arthropoda |
D. Protopterus | 4. between Pisces and Amphibian |