Artificial intelligent assistant

ungulite

ungulite Palæont.
  (ˈʌŋgjʊlaɪt)
  [f. L. ungul-a, ungula + -ite1.]
  A Palæozoic brachiopod, the obolus. ungulite grit: see obolite.

1850 Ansted Elem. Geol., Min., etc. §980 A sandstone, or grit, distinguished by a remarkable fossil (the Ungulite) unknown in Western Europe. Ibid. Index, Ungulite grit. 1859 Murchison Siluria (ed. 3) xiv. 374 The little horny brachiopod, the Obolus or Ungulite, is so much more abundant than any other fossil, as to have induced Pander to give to the rock the name of Ungulite grit.

Oxford English Dictionary

yu7NTAkq2jTfdvEzudIdQgChiKuccveC c683e66a49db25822cca2cd2454c749b