Mollusks _Cephalopods
24 images Created 9 Mar 2021
Mollusks: Cephalopods which include Octopus & Squid:
The phylum of Mollusca is the second-largest group of invertebrate animals, accounting for nearly a quarter of the animals alive today. (Arthropoda is larger.) Mollusks are the largest marine phylum. The phylum includes Cephalopods, which are squid and octopus; gastropods, which include snails, and slugs, limpets, and bivalves; and five other classes of living mollusks and two extinct classes. Fossil records indicate they were alive during the Cambrian period some 500 million years ago. Mollusks are defined by having a mantled body, like a cloak over the main body organs, a similar nervous system, and having a saw-like tongue called a radula, except for
The phylum of Mollusca is the second-largest group of invertebrate animals, accounting for nearly a quarter of the animals alive today. (Arthropoda is larger.) Mollusks are the largest marine phylum. The phylum includes Cephalopods, which are squid and octopus; gastropods, which include snails, and slugs, limpets, and bivalves; and five other classes of living mollusks and two extinct classes. Fossil records indicate they were alive during the Cambrian period some 500 million years ago. Mollusks are defined by having a mantled body, like a cloak over the main body organs, a similar nervous system, and having a saw-like tongue called a radula, except for
