0
Vertebrates
Vertebrates belong to the subphylum Vertebrata – the largest subphylum of chordates containing several groups of large land animals including mammals, birds, reptiles, amphibians and fishes. Vertebrates have spinal columns and backbones. There are now around 58,000 species of vertebrates.
1,413 Questions
How long ago did the first vertebrates appear?
There are two main theories on this. The first is that they were made approximately 4,000 or 5,000 years ago--these were sea mammals.
The other theory says that they evolved over millions of years from protozoa-type things so the first vertebrates were probably frog-like creatures according to this theory.
Earth's first vertebrates appeared during this period?
No, the first vertebrates evolved long before the Mesozoic. The first vertebrates, small jawless fish, evolved around 520 million years ago. Land animals had even evolved long before the Mesozoic Era.
What are three types of egg laying vertebrates?
Birds, amphibians, fish and reptiles all lay eggs.
Monotreme mammals (the platypus and echidnae) also do this.
What is the most ancient gruop of vertebrates?
fish
The vertebrates have a nebulous starting point. There are some chordates that have more of a notochord than a true vertebrate column. Some taxicologists are more comfortable saying that a Coelacanth has a notochord rather than a vertebrate column when clearly the vertebrate are present in this animal.
So its is a matter of your own definition. One could say 'at a stretch' that the hagfish and lamprey are the most ancient vertebrates.
What vertebrate group are owls in?
As birds, Barn owls belong to the class Aves and the Order Strigiformes. The family is Tytonidae.
They are birds of prey, so belong to the group of birds known as "raptors".
Is the blue marlin a vertebrate or a invertebrate?
The Blue Marlin is a vertebrate. It is one of the largest and the most beautiful fish in the ocean. It spends most of it's life far out at sea.
What physical features are common to all vertebrates?
Most animal's internal organs are the exact same, varying in size and location. Other than that, animals are very different and mostly only the same species have exactly the same physical features.
Cuckoos are birds and, like all birds, they are vertebrates because they have a spine and spinal cord, and an internal skeleton. They belong to the Phylum Chordata.
Mammals, birds, fish, reptiles and amphibians are all vertebrates.
What are five classes of vertebrates?
There are 5 types of vertebrates: Fish, amphibian, reptile, bird and mammal.
Endothermic (warm blooded) vertebrates are: birds, mammals.
Exothermic (cold blooded) vertebrates: fish, amphibian, reptile.
Name 5 organs found in most vertebrates?
Five organs that are found in most vertebrates are the brain, stomach, heart, eyes and skin. Vertebrates are animals that have a spine.
What are the three characteristics that vertebrates have in common?
There are actually five characteristics that all vertebrates have in common; a vertebral column composed of multiple vertebrea (spine), a cranium (the bone that envelopes the brain), a closed circulatory system, nural crest, and a pronounced cephalization.
What Are At least characteristics Of Each class of vertebrates?
Fish- only vertebrate that has gills its whole life
Bird- Only vertebrate with feathers
Reptile- Dry scaly skin
Mammal- only vertebrate that doesn't lay eggs
Amphibian- Spend half of their life in water
What is the dominant vertebrates throughout the Cretaceous period?
The common consensus is that dinosaurs dominated the land, being the most diverse large animals, and reaching huge sizes. In the oceans, large marine creatures included plesiosaurs, pliosaurs, ichthyosaurs (during the Jurassic and early Cretaceous), and mosasaurs (during the Cretaceous). The skies were ruled by pterosaurs. Coniferous trees were the primary large plants.
What is the unique characteristics of vertebrate?
They have notochords that run down their back and slits in their throat area.
Is shell fish a vertebrate or invertebrate?
No, it is an invertebrate. It has no vertebral column which defines "vertebrates".
A mollusc is an animal that comes from the Phylum Mollusca, and could be part of one of 7 classes:
- Aplacophora
- Monoplacophora
- Cephalopoda (like squids and octopus)
- Scaphopoda
- Polyplacophora
- Gastropoda (snails)
- Bivaliva (clams)
There are 13 general characteristics of the Phylum Mollusca:
- bilaterally symmetrical, unsegmented, coelomate Protostomes
- Mantle with shell glands that secrete calcareous epidermal spicules, shell plates or shells
- body covered by thick epidermal-cuticular sheets of skin, the mantle and mantle cavity (contains the ctenidia, osphradia, nephridiopores, gonopores and anus)
- large well defined muscular foot, often flatted with creeping sole
- viscera concentrated dorsally as a "visceral mass"
- coelom limited to small spaces around the heart and gonads
- heart lies in pericardial chamber and composed of separate ventricle and atria
- principle body cavity is hte hemocoel (open circulatory system)
- buccal region provided with a radula
- complete gut, with marked region specialization
- large complex metanephrida ("kidneys")
- embryogeny typically protostomous
- with trocophore larva, and usually a veliger larva
