echinoderm


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echinoderm

any of the marine invertebrate animals constituting the phylum Echinodermata, characterized by tube feet, a calcite body-covering (test), and a five-part symmetrical body. The group includes the starfish, sea urchins, and sea cucumbers
References in periodicals archive ?
Comparatively well diversified trilobites, brachiopods, bivalves, bryozoans, gastropods, ostracods, echinoderms, hyoliths, cephalopods, conulariids, rare agnostids and graptolites, associated with locally abundant ichnofossils from the Bohdalec Formation, have been studied for more than 150 years (see Barrande 1872; Havlicek & Vanek 1966, 1990; Mikulas 1988; Fatka & Mergl 2009).
The fixed variables were site and period; and the dependent variables were Simpson Index, and each of the major macrobenthic invertebrate groups (Annelids, Echinoderms, Mollusks, Crustaceans, and others).
Farley (2002) argues that echinoderm eggs exhibit Brownian motion.
The researchers later paired their carbon estimates with population density and mortality data for the different echinoderm classes worldwide to determine how much calcium carbonate full-sized animals store in their bodies and how quickly that carbon was buried by sediment after the animals die.
There will be a giant sea cucumber crawl- through activity area where children can explore the animal's body parts, as well as rubbing tables, where kids can cover different types of fossilized echinoderms with paper and rub over them with crayons, creating a take-home souvenir.
Range extensions are presented for 14 symbiotic shrimp or obligate invertebrate predators that live with echinoderms, gorgonians, antipatharians or corals.
The Vasalemma Formation is unique within the Ordovician succession of the entire Baltic region, being mainly composed by echinoderm grainstones dominated by ossicles and thecal plates of the rhombiferan cystoid Hemicosmites.
They proposed amending European Blue Flags with echinoderm logos that further indicate ecosystem health.
A subset of NSCLC patients have been identified whose tumors carry a unique mutation in which the echinoderm microtubule-associated protein-like 4 (EML4) gene is fused to ALK, also known as an EML4-ALK translocation.
The sediment baffled between the framework builders consists of very poorly sorted echinoderm ossicles, brachiopods and rare ?

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