Viewing topic: Pen

See sub-topics for Pen ... >> Natural Science >> Zoology >> Pen

Highest Rated Sign

No video has been submitted for this term

Nobody has posted a sign yet.


  • Definition: A flattened flexible internal support in a squid; a remnant of the ancestral shell.

    Source: Hickman, C.P., et al. 2011. Integrated Principles of Zoology. Fifteenth Edition. McGraw-Hill Higher Education.

  • There are no comments for this topic.