Species similar to or like Echinoderm
Any member of the phylum Echinodermata of marine animals. Wikipedia
Crinoids are marine animals that make up the class Crinoidea, one of the classes of the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. Those crinoids which, in their adult form, are attached to the sea bottom by a stalk are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, being members of the largest crinoid order, Comatulida. Wikipedia
Although the phylogenetic classification of non-vertebrate animals (both extinct and extant) remains a work-in-progress, the following taxonomy attempts to be useful by combining both traditional (old) and new (21st-century) paleozoological terminology. Not intended to be all-inclusive or completely comprehensive. Wikipedia
- Minor changes in salinity led to more brackish conditions, that result on a lack of abundant marine fauna, such as Echinoderms, Belemnites.
- Echinoderms are marine animals, widespread in all oceans, but not found in fresh water.
- Echinoderms (Greek for spiny skin) is a phylum which contains only marine invertebrates.
- The fertilised eggs hatch to release free-swimming vitellaria larvae.
- However, it is now generally accepted that homalozoans were echinoderms because their calcite skeleton was composed of the typical stereom crystalline structure.
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