Trilobites existed in prehistoric times.Were they animals or plants?

Answer 1

Animals that lived in the sea.

Answer 2

Trilobites existed for millions of years, they lived
under water, so they may be classified just as a
vertibrate. Look it up in the dictionary, or Google it. They definitely were not a plant- more like a creature of the sea.

Answer 3

Trilobites are hard-shelled, segmented creatures that existed over 300 million years ago in the Earth's ancient seas. They went extinct before dinosaurs even came into existence, and are one of the key signature creatures of the Paleozoic Era, the first era to exhibit a proliferation of the complex life-forms that established the foundation of life as it is today. Although dinosaurs are the most well-known fossil life forms, trilobites are also a favorite among those familiar with Paleontology (the study of the development of life on Earth), and are found in the rocks of all continents.
ANCIENT ARTHROPODS
Trilobites were among the early arthropods, a phylum of hard-shelled creatures with multiple body segments and jointed legs (although the legs, antennae and other finer structures of trilobites only rarely are preserved). They constitute an extinct class of arthropods, the Trilobita, made up of nine orders, over 150 families, about 5,000 genera, and over 15,000 described species. New species of trilobites are unearthed and described every year. This makes trilobites the single most diverse group of extinct organisms, and within the generalized body plan of trilobites there was a great deal of diversity of size and form. The smallest known trilobite species is just under a millimeter long, while the largest include species from 30 to over 70 cm in length (roughly a foot to over two feet long!). With such a diversity of species and sizes, speculations on the ecological role of trilobites includes planktonic, swimming, and crawling forms, and we can presume they filled a varied set of trophic (feeding) niches, although perhaps mostly as detritivores, predators, or scavengers. Most trilobites are about an inch long, and part of their appeal is that you can hold and examine an entire fossil animal and turn it about in your hand. Try that with your average dinosaur!


THE TRILOBITE BODY PLAN

Whatever their size, all trilobite fossils have a similar body plan, being made up of three main body parts: a cephalon (head), a segmented thorax, and a pygidium (tail piece) as shown at left. However, the name "trilobite," which means "three lobed," is not in reference to those three body parts mentioned above, but to the fact that all trilobites bear a long central axial lobe, flanked on each side by right and left pleural lobes (pleura = side, rib). These three lobes that run from the cephalon to the pygidium are what give trilobites their name, and are common to all trilobites despite their great diversity of size and form. You can examine the trilobite body plan in more detail using the links on the navigation bar below, or link directly to a page describing trilobite major features.

PLEASE EXPLORE FURTHER
Now that you know generally what trilobites are, please feel free to explore this illustrated web guide to the orders of trilobites. You'll learn about trilobite body parts, how scientists classify trilobites, when, where, and how they lived, and how to tell the major groups apart. You'll also learn where to turn for more trilobite information on the web and in the literature. I hope in the end you come to better appreciate their amazing variety. Although they are all extinct now, they represent among the first explosions of biological diversity that this amazing planet of ours has generated over the eons. Return at any time to the home page for access to all pages of this site..

Answer 4

Animals, among the earliest ones on the planet.

Answer 5

Animals - crustaceans to be exact

Answer 6

animals

Answer 7

Animals, crustaceans or relative to crustaceans.

Answer 8

ask Kent Hovind, he seems to know a lot about them. hahahahahahahahahahha

Answer 9

They were shellfish.
MMM seafood.