Definition of lamp shell in English:

lamp shell

Line breaks: lamp shell

noun

  • A marine invertebrate which superficially resembles a bivalve mollusc but has two or more arms of ciliated tentacles (lophophores) that are extended for filter-feeding. Lamp shells are common as fossils. Also called brachiopod.
    • Phylum Brachiopoda: numerous groups in the Palaeozoic era but few surviving to the present day
    More example sentences
    • Brachiopods - lampshells - for instance, have remained virtually unchanged since they first appeared in the Cambrian Period, more than 500 million years ago.
    • For example, horseshoe crabs (Limulus) and lampshells (Lingula) both occur in shallow marine environments, where many predators and competitors exist, particularly since the Cretaceous Period.
    • Until now, the earliest animals known to be coloured were lamp shells that lived about 350 million years ago.

Origin

mid 19th century: from its resemblance to an ancient oil lamp.

More definitions of lamp shell

Definition of lamp shell in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day maelstrom
Pronunciation: ˈmālˌsträm
noun
a powerful whirlpool in the sea