- postabdomen). The
genus is
remarkable for the
unusual "wings" on its
first preabdominal segment,
which immediately distinguish it from any
other euthycarcinoid...
-
recognizing the full
number of
prosomal appendages and the
number of
preabdominal and
postabdominal segments. Both
Nieszkowski and Hall
recognized that...
-
preabdominal segment is
retained as a
narrow element known as 'microtergite',
which is not
observed in eurypterids. The
posterior three preabdominal segments...
- bottom-dwelling predator. The
marked articulation surfaces on each of the
preabdominal segments suggest that
Willwerathia capable to
enroll itself in a way...
-
preserves a
complete and
articulated series of telsonal,
postabdominal and
preabdominal segments. In the specimen, the "tail" is bent to a
considerable degree...
- The
postabdominal segments (segments 8 to 12) were
longer than the
preabdominal segments (segments 1 to 7) and
lacking of ornamentation. It had 12-13...
-
tubercles (rounded projections), and that it had
lateral epimera on its
preabdominal tergites (spines
along the edges). The
Wiedopterus type
specimen does...
-
preserves a
complete and
articulated series of telsonal,
postabdominal and
preabdominal segments. In the specimen, the "tail" is bent to a
considerable degree...
- was a
complete and
articulated series of telsonal,
postabdominal and
preabdominal segments, and it
showed a very
strong lateral curvature in the postabdomen...
-
first four
tergites of the preabdomen,
while the
second preserves five
preabdominal and
three postabdominal tergites; this
specimen represents twice the...
