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Placodermi, an extinct class of armored prehistoric fish, are characterized by their bony plates that covered their head and thorax, providing protection. They typically had a flattened body shape and were among the first vertebrates to develop jaws, allowing for a more varied diet. Many species exhibited complex jaw structures and some even had paired fins, which contributed to their mobility in aquatic environments. Placodermi thrived during the Devonian period, showcasing a diversity of forms and sizes.
What else can I help you with?
Which characteristics do scientists to use to group species?
Scientists use Ancestors and DNA to group DNA.
What are common characteristics shared by all animals?
Genitals
Which classification groups contains organisms that have the most characteristics in common?
species
Do Lions and Frogs have anything in common?
YES! Lions and frogs have shared derived characteristics. ALthough They look different on both the outside and inside, they have some things in common. One thing that they have in common is that they both have a back bone. This shows that they came from a common ancestor.
What is a general idea of objects events animals or people based on common features traits or characteristics?
schema
What are two common characteristics of crustaceans?
I'm not sure if you mean their common characteristics, or characteristics that they have in common. Some common characteristics are that they have exoskeletons and they are segmented. However, they also have some characteristics that they have in common, and some which no other animals have. One of these characteristics is that they possess biramous appendages, which means legs and other appendages which are forked into two pieces, although some crustaceans lose the minor piece of some legs as they mature. The seoncd thing they all have in common is that all of them first pass through a nauplius larval stage.
Why are some genetic characteristics more common than others?
because some of the characteristics you can get from your family and others you get from environmental conditions
What are the common characteristics of the material that protected some eggs?
blahh
What are some characteristics that team games have in common?
they work together
What are some common characteristics of a dachshund face?
Common characteristics of a dachshund face include a long snout, expressive eyes, floppy ears, and a prominent brow ridge.
What are some characteristics common to all plants?
they cannot move but they are living things
What is the common characteristics of Chinese immortals?
what are common characteristics of chinese immortals
What are some common characteristics of puppies that are brown and white?
Common characteristics of brown and white puppies may include a fluffy coat, floppy ears, playful behavior, and a friendly disposition.
What are the characteristics of all plants?
Some common characteristics of all plants are that they contain a cell wall. Other characteristics are making their own food and that plants contain a cuticle.
What are some common characteristics of bugs similar to stink bugs?
Some common characteristics of bugs similar to stink bugs include a shield-shaped body, sucking mouthparts, and the ability to release a foul-smelling odor as a defense mechanism.
What are some common characteristics or behaviors of a bad PhD student?
Some common characteristics or behaviors of a bad PhD student include procrastination, lack of organization, poor communication skills, resistance to feedback, and a lack of motivation or dedication to their research.
Why are some physical characteristics more common than others?
It is because of dominance in your traits
