42 possibly, if better known, would show considerable resemblance to the Canadian fauna. The slates of Brooks Mountain, Seward Peninsula, Alaska, are said to carry Daonella cf. lommeli Wismann and Gymnotoceras sp. (Martin, 1926). If this is so, they are probably of the same age as the Canadian beds carrying the Beyrichites-Gymnotoceras fauna. Species of Gymnotoceras and Parapopanoceras have been described from the island of Spitzbergen in the Arctic Ocean (Mojsisovics, 1886). Parapopanoceras tetsa McLearn and its varieties are close to the Spitzbergen Parapopanoceras malmgreni (Lindstrom) and P. vernewili (Mojsisovics). The Canadian species Gymnotoceras columbianum McLearn, G. wrighti McLearn, and G. helle McLearn recall Spitzbergen species like G. nathorsti Mojsisovics and G. geminatum (Mojsisovics) (McLearn, 1948). Kiparisova (1937) has recently described a Triassic fauna from the mouth of Olenek River and other localities in northern Siberia. This fauna contains some species, such as Hungarites grumulus Kiparisova, which resemble the inner whorls of Longobardites intornatus in the Canadian Beyrichites-Gymnotoceras fauna. Gymnites hagi in the Canadian fauna resembles Gymnites subclausus var. as figured by Salopek (1911) in a fauna from Od Drenini, near Spizza in southern Dalmatia. This Dalmatian fauna is said to contain Para- ceratites trinodosus, and so is of Anisian and Paraceratitan age. Anagymnites lamarcki Oppel occurs in the Muschelkalk of the Hima- layan Mountains, and is presumably of Paraceratitan age. It resembles A. cf. lamarcki found in the Canadian Beyrichites-Gymnotoceras fauna (McLearn, 1948). LIARD FORMATION Definition The beds of the Liard formation were first included by Kindle (1944) in his Toad formation. Later, however, he separated the higher, more massive and coarser grained strata from the lower, more thin-bedded and more finely grained beds, giving the name of Liard to the former and retaining the name of Toad for the latter (Kindle, 1946). The Liard, so defined, lies between the Toad and the Lower Cretaceous, possibly partly Jurassic, Garbutt formation, and consists of more than 600 feet of marine, grey, mostly light grey weathering, thick, massive beds of fine, calcareous sandstone, arenaceous limestone, limestone, and minor amounts of silt- stone and shale. The contact with the underlying Toad formation is mostly conformable, although in places it may be slightly disconformable. The contact with the overlying Garbutt formation is disconformable, all of the Upper eee and possibly the Jurassic and part of the Lower Cretaceous being absent. The type locality is near Hades (Hell) Gate, along Liard River.