Quantcast

Latest Calcareous sponge Stories

2014-04-30 10:33:54

Sponges are usually considered to be the oldest living animals, having evolved before all other groups. The simplicity of their body structure and tissue organization has for many years made them candidates for the ancestral group of animals, and they have long been regarded as our best illustration of what the earliest animals would have looked like. This has been supported by genetic analyses, which suggest that sponges branched from other animals a very long time ago, deep in the...


Latest Calcareous sponge Reference Libraries

Clathrina clathrus
2014-01-05 00:00:00

Clathrina clathrus is a species of calcareous sponge belonging to the Clathrinidae family. It is a shallow-water species of the Mediterranean Sea and is also found along the Atlantic coasts of Europe as far north as the British Isles. This sponge is yellowish or white and grows up to 4 inches in diameter. It usually appears cushion-shaped at a distance -- its close relative Clathrina coriacea is appears more flattened. Upon closer inspection, the sponge is actually a tangled mass of tubes....

More Articles (1 articles) »
Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
Related