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Trilobites, and eurypterids (giant marine scorpions).
Ammonites are not arthropods but molluscs.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoThe trilobites are now extinct arthropods thought to have flourished in the oceans for over 270 million years until the end of the Permian period.
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Which group of arthropods are marine?
The Crustacean group (usually considered a sub-phylum) are mostly marine arthropods, and include krill, shrimp, crabs and lobster; there are non-aquatic exceptions in this group like terrestrial woodlice.
When did The Trilobites end?
0.2 - 32 inches
What is the largest group of arthropods?
Insects are the largest group of arthropods.
What is a belemnoid?
A belemnoid is a member of the Belemnoidea, an extinct group of marine cephalopods, or the styloid process of the ulna or the temporal bone.
What group of?
Lobsters are in the group of Arthropods.
What is the largest phylum?
The largest phylum in the animal kingdom is Arthropoda, which includes insects, spiders, crustaceans, and other related organisms. It is estimated that over 80% of described animal species belong to this phylum.
Why did arthropods become extinct?
The arthropods are far from extinct. They are one of the largest groups of animals, and include about anything with an exoskeleton. Insects, spiders, crabs, lobsters, crayfish, beetles (which are insects), scorpions, and so on.
Is a opabinia an arthropod?
Yes, Opabinia are classified as arthropods, although the genus is extinct.
What is the name of the group to which arachnids and insects both belong?
its an Arthropod
Which group are starshishes more closley related arthropods or jellyfishes?
which group are starfishes more closely related arthropods or jellfishes
Is the trachea found in all arthropods?
No, not all. Remember some arthropods are aquatic; the spiracle/trachea/tracheole system utilized by terrestrial insects is largely replaced by gills in marine arthropods.
What group of arthropods do not have an anntennae?
Arachnids.
