How did early land animals differ from those common today?

Early land animals differs from the land animals today because the early land animals are now extinct. These land animals are called the dinosaurs. These animals are under the Mesozoic era. Some early land animal are the Diadectes, Lycaenops, Moschops, and Edaphosaurus. Also centipedes are included as the early land animals.

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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.