- than a
single evolute coil.
Whorl sections are oval, subquadrate, or
subtrapezoidal.
Sutures bend
forward on the
outer rim,
forming wide
shallow ventral...
-
pairs were long and powerful,
without spines. The
prosoma (head) was
subtrapezoidal, with
arcuate compound eyes on
parallel axes. The male
genital appendages...
- with most of the
inner whorls exposed;
whorl sections subquadrate to
subtrapezoidal, with
rounded venter.
Ribbing is strong, in some sharp.
Primary ribs...
- expanding.
Whorl section of
first two
whorls approximately circular,
subtrapezoidal in
later whorls.
Umbilicas perforated,
protoconch swollen, not in contact...
- the
curved distal margin of the
chelae (claws). The
prosoma (head) is
subtrapezoidal (a
trapezoid with
rounded corners), with
compound eyes
located near...
-
pairs were long and powerful,
without spines. The
prosoma (head) was
subtrapezoidal, with
arcuate compound eyes on
parallel axes. The male
genital appendages...
-
similar but
larger projection at ⅔:
fringes purplish fuscous.
Hindwings subtrapezoidal;
greyish white, purplish-tinged
towards termen:
fringes ochreous white...
- Mymoorapelta, Gargoyleosaurus,
Gastonia and ****anthus.
Subrectangular to
subtrapezoidal,
solid osteoderms preserved in the
holotype and
paratype specimen are...
-
delicate lirae, the
interstices radiately striate. The
aperture is
subtrapezoidal and
plicate within. The lip is double. The
basal margin is denticulate...
-
Whorl sections are
generally compressed but may be
subquadrate to
subtrapezoidal or
coronate (heart shaped), or
slightly depressed dorso-ventrally. The...
