- with the
pterygotioids,
which are
thought to have
originated within, or in
close proximity to, Laurentia. It
remains unclear whether pterygotioids were capable...
- had a
distribution similar to the
cosmopolitan distribution of the
pterygotioids,
though they were not as
common nor as successful. The Carcinosomatoidea...
-
combining characteristics of
Hughmilleria with
those of the
derived pterygotioids,
showing a more
advanced morphology than that of Hughmilleria. With...
- been
noted as
possessing a mix of
features from both more
primitive pterygotioids such as
Slimonia and more
derived members of the
group firmly within...
-
families Pterygotidae and Slimonidae.
Despite their classification as
pterygotioids, the
hughmilleriids possessed several characteristics shared with other...
-
Fossil of Jaekelopterus, a
pterygotioid. At a
length of 2.5 meters, it is one of the
largest arthropods to have ever lived....
-
Herefordopterus they were
completely marginal, a
feature present in all
pterygotioid genera. In addition, the
triangular anterior carapace margin present...
-
distinguished primarily by
sharing several features with more
basal pterygotioid eurypterids, such as its
appendages being similar to
those of Slimonia...
-
Vernon Formation, New York. This
species is the most
abundant species of
pterygotioid in the area with
around 450
specimens found. The
generic name derives...
- eyes were
broadly crescentic and convex, and as in the rest of the
pterygotioids, they were
located in the
margin of the carapace. A
total of 19 valid...
