Definition of Subtrapezoidal. Meaning of Subtrapezoidal. Synonyms of Subtrapezoidal

- than a single evolute coil. Whorl sections are oval, subquadrate, or subtrapezoidal. Sutures bend forward on the outer rim, forming wide shallow ventral...
- other. These teeth are bulbous, with narrowed bases and subquadrate/subtrapezoidal section. They clearly show wear facets on their distal side, producing...
- pairs were long and powerful, without spines. The prosoma (head) was subtrapezoidal, with arcuate compound eyes on parallel axes. The male genital appendages...
- 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...
- slight uncoiling of the last whorls. Juvenile whorls are depressed subtrapezoidal to subrectangular in section, with slightly convex flanks, arched venter...
- with most of the inner whorls exposed; whorl sections subquadrate to subtrapezoidal, with rounded venter. Ribbing is strong, in some sharp. Primary ribs...
- oblong-ovate body. The labrum is barely distinct while the labium is subtrapezoidal. The mandibles are edentate (without teeth). The maxillae are open ("apertæ")...
- similar but larger projection at ⅔: fringes purplish fuscous. Hindwings subtrapezoidal; greyish white, purplish-tinged towards termen: fringes ochreous white...
- pairs were long and powerful, without spines. The prosoma (head) was subtrapezoidal, with arcuate compound eyes on parallel axes. The male genital appendages...