Urakawites
Encyclopedia
Urakawites is an extinct Ammonite
from the Upper Cretaceous (Campanian
) of Japan, Sakhalin, Russia
, British Columbia, Canada and possibly Germany and Angola. Urakawites is placed in the family is Pachydiscidae
.
Urakawites is characterized by a bituberculate (meaning it has two rows of tubercles on either side), strongly ribbed, moderately compressed shell.
Ammonite
Ammonite, as a zoological or paleontological term, refers to any member of the Ammonoidea an extinct subclass within the Molluscan class Cephalopoda which are more closely related to living coleoids Ammonite, as a zoological or paleontological term, refers to any member of the Ammonoidea an extinct...
from the Upper Cretaceous (Campanian
Campanian
The Campanian is, in the ICS' geologic timescale, the fifth of six ages of the Late Cretaceous epoch . The Campanian spans the time from 83.5 ± 0.7 Ma to 70.6 ± 0.6 Ma ...
) of Japan, Sakhalin, Russia
Sakhalin
Sakhalin or Saghalien, is a large island in the North Pacific, lying between 45°50' and 54°24' N.It is part of Russia, and is Russia's largest island, and is administered as part of Sakhalin Oblast...
, British Columbia, Canada and possibly Germany and Angola. Urakawites is placed in the family is Pachydiscidae
Pachydiscidae
Pachydiscidae comprise a family of middle and upper Cretaceous ammonites which makes up part of the Desmocerataceae.Pachydiscidae are of moderate to large size, evolute to rather involute, and vary in section from inflated and depressed to high-whorled and compressed...
.
Urakawites is characterized by a bituberculate (meaning it has two rows of tubercles on either side), strongly ribbed, moderately compressed shell.