• Webster's Revised Unabridged Dictionary
    • n Productus (Paleon) An extinct genus of brachiopods, very characteristic of the Carboniferous rocks.
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Century Dictionary and Cyclopedia
    • n productus A genus of protrematous straight-hinged brachiopods found in Devonian, Carboniferous, and Permian formations, and especially abundant in and characteristic of the last two. The genus is represented by numerous species, many of which have world-wide distribution and all of which have convexo-concave shells of semicircular outline with thick prominent overarching beaks and spinose surfaces. The hinge-organs, with the exception of the strong cardinal process, are absent or vestigial.
    • ***


Webster's Revised Unabridged Dictionary
NL. See Product


In literature:

Pedes tribus digitis anticis; uno postico; digitus interior minimus; exterior ad basin medio connexus; hallux productus validus.
"Zoological Illustrations, Volume I" by William Swainson