BEST SELLING ECHINODERMS COLLECTION
Echinoderms are Marine invertebrates which include starfishes, sea urchins, brittlestars, crinoids, and sea cucumbers.
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Echinoderms are Marine invertebrates which include starfishes, sea urchins, brittlestars, crinoids, and sea cucumbers.
Get the best deals on Echinoderm Fossils when you shop unique selection at our website. Echinoderms include some of the most familiar seashore animals. Echinoids are one of the more diverse and successful echinoderm groups today, including familiar echinoderms such as the sea urchins and sand dollars.
CRINOIDS
The majority of the thousands of known fossil crinoids and a few dozen modern deep-
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CRINOIDS Echinoderms Collection
Star fish Echinoderms Collection
Brittle Stars Echinoderms Collection
STAR FISH
What are starfish? They’re not really fish as we normally think of fish, and they’re certainly not stars! These very mysterious ocean-
Starfish are carnivores; they feed on clams, shells, and mussels. They have two stomachs, one of which can be pushed outside of the body during eating. This allows them to eat larger prey, which can’t fit in the sea star’s small mouth.
BRITTLE STARS
Brittle Stars are part of the benthic (bottom feeding) fauna found in the marine environment. They are broadly referred to as Echinoderms, classified in the Phylum Echinodermata which are marine animals having radial symmetry with five parts, often with spines. They have a unique water vascular system and depending on the species have an internal or external calcite skeleton.
There are at least 40 species of brittle stars in Victorian waters. None are endemic to Victoria but two species Amphiura triscacantha and Ophiocomina australis are considered Vulnerable and Listed under the Victorian Flora and Fauna Guarantee Act 1988. Both species have extremely limited distribution and found in association with seagrass habitat which is sensitive to environmental degradation (O’Hara & Barmby 2000)
The Brittle Stars Amphiura triscacantha and Ophiocomina australis have central disks about 1 cm in diameter. Brittle Star taxonomy is quite detailed with a number of features used to identify the various species e.g. disk and arm structure and cover, mouth and jaw structure.