Marine invertebrates
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invertebrate that partially or wholly inhabits marine habitats | |||||
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Ernst Haeckel's 96th plate, showing some marine invertebrates. Marine invertebrates have a large variety of body plans, which are currently categorised into over 30 phyla
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Dickinsonia may be the earliest animal. They appear in the fossil record 571 million to 541 million years ago.
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Kimberella, an early mollusc important for understanding the Cambrian explosion. Invertebrates are grouped into different phyla (body plans).
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The 49th plate from Ernst Haeckel's Kunstformen der Natur, 1904, showing various sea anemones classified as Actiniae, in the Cnidaria phylum
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"A variety of marine worms": plate from Das Meer by M.J. Schleiden (1804–1881)
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Sponges have no nervous, digestive or circulatory system
- ↑ Cite error: Invalid
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