1. an order of long-tailed crustaceans including lobsters, crayfish, and shrimp
Usage: zoological

Examples

• The macrurans are characterized by their elongated abdomens and well-developed tails.
• Lobsters and shrimp belong to the order macrurans.
• Marine biologists study the feeding habits of various macrurans.
• The fossil record shows macrurans have existed for millions of years.
• Commercial fishing targets several species of macrurans worldwide.