How To Spell clavicularium?

Correct spelling: clavicularium

What is the definition of clavicularium?

  1. The epiplastron of Chelonia, probably corresponding to the clavicles of other forms.

Google Ngram Viewer results for clavicularium:

This graph shows how "clavicularium" have occurred between 1800 and 2008 in a corpus of English books.