-
anteriorly having a
somewhat swollen crest.
Aperture is
slightly oblique,
semiovate or piriform,
obstructed by 3 teeth: in the
middle of the
parietal wall...
- very short,
minutely bracteolate at the base;
lobes of the
calyx deltoid-
semiovate ;
corolla whitish,
cleft to the base,
hardly twice as long as the calyx...
- telson,
which was long and styliform. The
prosoma (head)
varied from
semiovate to subrectangular. List of
eurypterids Paleontology portal Dunlop, J....
-
irregularly striate. The body
whorl shows a few
growth striae. The
aperture is
semiovate and is
provided with five teeth. The
parietal lamella are very high and...
- poorly-known
genus whose carapace (dorsal
plate of the prosoma, head) was
semiovate bordered by a
marginal rim, with eyes
laterally placed, a
preabdomen and...
-
width of the s**** is 6 mm. The
height of the s**** is 3 mm. The s**** is
semiovate, thin and fragile,
almost smooth, brown, semitransparent.
Sculpture consisting...
-
violet gloss,
especially anteriorly.
There is a very
large deep
fulvous semiovate dorsal patch sharply limited by a
white rim,
extending from one-fourth...
- The five
whorls rapidly widen.. The
spire is retuse. The
aperture is
semiovate. The thin lip is
duplicated and co****ly crenate. The flat
columella is...
- ventricose,
obtuse at the apex, smoothish, subperforate. The
aperture is
semiovate, four-toothed, with one
tooth on the
parietal wall,
another on the columella...
-
there are
several finer between two
stronger striae. The
aperture is
semiovate,
obliquely truncate above, with
weakly reflected margins that are connected...
