gastralium

(redirected from Gastralia)

gastralium

[ga′strā·lē·əm]
(invertebrate zoology)
A microsclere located just beneath the inner cell layer of hexactinellid sponges.
(vertebrate zoology)
One of the riblike structures in the abdomen of certain reptiles.
References in periodicals archive ?
The stones themselves can be identified as gastroliths not only because of their position inside the ribs and gastralia fragments, but more importantly because they comprise mostly rounded quartz clasts, a lithology otherwise completely absent from the McCoy Brook Formation in the Wasson Bluff region.