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European stage of the Lower Cretaceous, spanning the time between 118 and 114 million years ago.
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Used to describe aquatic organisms that are bottom dwelling.
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European stage of the lowermost Lower Cretaceous, spanning the time between 135 and 131 million years ago.
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The production of light by living organisms.
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The branch of geology concerned with the separation and differentiation of rock units by means of the study of the fossils they contain.
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A mollusk having two shells hinged together, as the oyster, clam, or mussel; or any animal with two halves to its shell such as an ostracode or brachiopod.
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Fish of the class Osteichthyes, characterized by a skeleton composed of bone in addition to cartilage, gill covers, and an air bladder.
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