page_title: Belemnite
hierarchical_section_title: Belemnite
caption_attribution_description: Fossil belemnite. Rostrum and phragmocone; normal sections of a rostrum (visible the internal radial-concentrical structure of calcite fibers.
context_page_description: Belemnites are an extinct group of marine cephalopod, similar in many ways to the modern squid, and closely related to the modern cuttlefish.
  Like them, the belemnites had an ink sac, but, unlike the squid, they had ten arms of roughly equal length, and no tentacles.
  The belemnites are a monophyletic group of superorder status, called the Belemnoidea. There are four orders.
context_section_description: Belemnites (or belemnoids) are an extinct group of marine cephalopod, similar in many ways to the modern squid, and closely related to the modern cuttlefish.
  Like them, the belemnites had an ink sac, but, unlike the squid, they had ten arms of roughly equal length, and no tentacles.
  The belemnites are a monophyletic group of superorder status, called the Belemnoidea. There are four orders.
caption: Fossil belemnite. Rostrum and phragmocone; normal sections of a rostrum (see the radial-concentrical structure of calcite fibers).
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