amphistomous

They would even strip off the amphistomous worms which literally live in the stomachs of all cattle in this region, and, without more ado, put them raw into their mouths by the handful.

1875 April, “Miscellany: Food of the Bongos”, in Popular Science, volume 6, number 41, page 766

In many a pylom occurs also at the aboral pole, so that the shell, perforated by a mouth at both poles of the principal axis, acquires an amphistomous character.

1889, The Annals and Magazine of Natural History - Volume 4, page 302

Some shells of an amphistomous Rhizopod were observed from near Recess, W. Ireland, which probably pertained to this genus. The shells were chitinoid, yellow in colour, and each aperture was situated on a slight protuberance.

1901, Pamphlets on Protozoology (Kofoid Collection)

Arendt and coworkers propose that the blastopore in this species is amphistomous, giving rise to both mouth and anus.

2009, Daniel H. Shain, Annelids in Modern Biology, page 108

Contrary to the view of Cable (1974), we do not consider larvae of this species as amphistomous.

2013, K. V. Galaktionov, A. Dobrovolskij, The Biology and Evolution of Trematodes, page 507

Adaxial and abaxial surfaces of three taxa of the Acutae group in the Pacific Northwest (C. aquatilis, C. lenticularis, and C. nebrascensis) are not differentiated (the amphistomous condition) .

1985, Systematic Botany Monographs, page 15

For most amphistomous leaves, the correct value for g_(lw) is between those given by Equations 11.24 and 11.25 (Moreshet et al., 1968).

2012, Robert W. Pearcy, J.R. Ehleringer, Harold Mooney, Plant Physiological Ecology: Field methods and instrumentation