Cephalopod - Wikipedia
Cephalopods are molluscs with a head, arms or tentacles, and a shell that may be internal or external. They are divided into two subclasses: Coleoidea (squid, octopus, cuttlefish) and Nautiloidea (nautilus).
Cephalopod | Definition, Etymology, Species, & Facts | Britannica
2024年9月25日 · Cephalopod is a class of mollusks with arms and tentacles, including octopus, squid, cuttlefish, and nautilus. Learn about their diversity, evolution, reproduction, and importance to humans from Britannica experts.
Cephalopod - Examples, Types, Characteristics, Evolution, & Pictures
2024年5月31日 · Learn about cephalopods, a group of mollusks with a prominent head and appendages. Find out their body plan, shell, radula, ink sac, organ system, sensory system, and more.
Cephalopods - Smithsonian Ocean
The cephalopods are a diverse class of mollusks. Today, scientists divide the living cephalopods into three groups, called superorders. Many details of cephalopod evolutionary classification continue to change as scientists find new clues from genetic testing and newly discovered fossils.
General features of cephalopods | Britannica
Cephalopods are marine mollusks with a centralized nervous system, eyes, tentacles, and suction disks. They can change colour, swim backward, and feed on various prey.
The Rise of the Cephalopods: An Evolutionary Origin Story
2021年9月10日 · Cephalopods are an incredibly unique class of mollusks that include many well-known marine animals such as octopuses, squids, cuttlefish, and nautiluses. You probably know them for their...
Cephalopods (Cephalopoda) | Marine Invertebrates - Earth Life
2023年12月20日 · Cephalopods are mollusks with prominent heads, beak-like jaws, and arms or tentacles. They are carnivorous predators with large brains, excellent vision, and ability to change color and texture. Learn about their biology, evolution, anatomy, behavior, ecology, and …
ADW: Cephalopoda: INFORMATION
Cephalopoda are marine mollusks with a head and foot merged into a ring of arms and/or tentacles. They have complex brains, eyes, and color-changing abilities, and belong to two subclasses and five orders.
Cephalopods: Facts about octopus, squid, nautilus and more
2021年10月13日 · Cephalopods are marine invertebrates with eight arms, a siphon, a mantle and two eyes. They include octopuses, squid, cuttlefish and nautiluses, and have diverse habitats, diets, movements...
Cephalopod origin and evolution: A congruent picture emerging …
2011年6月17日 · Cephalopods are extraordinary molluscs equipped with vertebrate-like intelligence and a unique buoyancy system for locomotion. A growing body of evidence from the fossil record, embryology and Bayesian molecular divergence estimations provides a comprehensive picture of their origins and evolution.