Tortoise: this animal is usually borne displayed tergiant in fesse, which position is sometimes described as passant. The term gradient seems to be used to mean the same, and tergiant seems to be implied though not expressed. When upright it should be blazoned erect, though haurient is found.
Argent, a tortoise displayed, tergiant barwise[otherwise passant] vert--GAWDY, Norfolk.
Argent, on a cross azure between in dexter chief and sinister base a tortoise gradient vert five fleurs-de-lis of the first--LE NEVE, London.
Azure, a tortoise erect or--COOPER.
Vert, three tortoises haurient or--HARPENY.