separating the two lateral endocones. Perkinsoceras has a single set of endocones. Two species of Perkinsoceras have been described, both early Middle...
2 KB (282 words) - 23:50, 6 September 2024
structures interpreted as siphuncles. Later Williamsoceras, Cacheoceras, and Perkinsoceras (Flower 1968, 1976) were added. Similar Allotrioceras and Mirabiloceras...
3 KB (265 words) - 19:49, 17 September 2022
Ordovician) of Valcour Island on Lake Champlain. Chazyoceras resembles Perkinsoceras which Flower included in the Allotrioceratidae - a family which Flower...
2 KB (218 words) - 21:55, 17 July 2024
Dideroceras Lobocyclendoceras Meniscoceras Paracyclendoceras Cacheoceras Perkinsoceras Williamsoceras Manchuroceras Schmidtoceras Intejocerida of the Floian...
18 KB (1,271 words) - 09:43, 29 October 2023
differs from Emmonsoceras (Flower 1955, 1976; Techert 1964) and from Perkinsoceras (Flower 1976) in that the ventral process in these is broad and in broad...
4 KB (487 words) - 19:54, 18 July 2023