Gasteropoda in the older rocks as compared with that of.    From Wordnik.com.  [Essays] Reference

Gasteropoda, and Lamellibranchiata, be only modifications by excess or defect of the parts of a definite archetype, then, I think, it follows as a necessary consequence, that no anamorphosis takes place in this group.    From Wordnik.com.  [Thomas Henry Huxley; A Sketch Of His Life And Work] Reference

Gasteropoda: 230.    From Wordnik.com.  [The Antiquity of Man] Reference

Gasteropoda, 58.    From Wordnik.com.  [Thomas Henry Huxley; A Sketch Of His Life And Work] Reference

Gasteropoda, Heteropoda, Pteropoda, and dibranchiate Cephalopoda.    From Wordnik.com.  [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference