Science- The Animal Kingdom -Cuarto Básico

The Animal Kingdom
There are many different types of animals in the world. Many animals are quite similar to each other. Others are quite different. Animals can be classified based on theirsimilarities. Continue on, and learn more about your fellow Earth inhabitants.Here are some of the animals you can investigate in our Science Reference Library. The first name you read is the common name forthe animal. The name in parentheses ( ) is the Latin word for the group (the phylum or subphylum or class or group or order) that scientists sometimes use to refer to animals. |InvertebratesAnimals 
without a Backbone
or Spinal Column: | VertebratesAnimals 
with a Backbone 
or Spinal Column:
(All these animals are in thephyla Chordata and the subphyla Vertebrata.) |
Protozoa
(phyla: protozoa)| Fish
(group: Pisces) |
Echinoderms
such as starfish
(phyla: Echinodermata) | Amphibians
such as frogs
(class: Amphibia) |
Annelids
such as earthworms
(phyla: Annelida) | Reptiles
such ascrocodiles
(class: Reptilia) |
Mollusks
such as octopus
(phyla: Mollusca) | Birds
(class: Aves) |
Arthropods
such as crabs, spiders and insects
(phyla: Arthropoda) | Mammals
(class: Mammalia) |Crustaceans
such as crabs
(subphyla: Crustacea) | Marsupials
such as kangaroos
(order: Marsupialia) |
Arachnids
such as spiders
(subphyla: Chelicerata
class: Arachnida) | Primates
such as gorillas andchimpanzees
(order: Primates) |
Insects
(subphyla: Uniramia
class: Insecta) | Rodents
such as mice
(order: Rodentia) |
  | Cetaceans
such as whales and dolphins
( order: Cetacea) |
  | Animals such asseals
(order: Carnivora
family: Phocidae) |
|

Animal Classes  No, animal classes are not like the classes people have at school!An animal class is made up of animals that are all alike in importantways.  Scientists have grouped animals into classes to make it easier to study them.There are many different animal classes and every animal in the world belongs to one of them.  The five most well...