the blunt-toothed giant hutia ("amblyrhiza inundata") is an extinct species of giant hutia from anguilla and saint martin that is estimated to have weighed between 50 and 200 kg (110 and 440 lb). it was discovered by edward drinker cope in 1868 in a sample of phosphate sediments mined in an unknown cave (possibly cavannagh cave) in anguilla and sent to philadelphia to estimate the value of the sediments. it is the sole species of the genus "amblyrhiza" in the fossil family heptaxodontidae.