Whorl sections are subrectangular, sutures sinuous, the siphuncle subcentral.
2.
The prosoma ( head ) varied from semiovate to subrectangular.
3.
Whorl section is subrectangular with convex sides that slope toward a concave venter.
4.
They create an irregular subrectangular case.
5.
"Hesperoceras " has a straight, orthoconic, shell with a subrectangular cross section.
6.
The abdomen is subrectangular, with somewhat flat sides, and has small tubercules at the front.
7.
The round houses have a diameter between three and six meters, and they contain a central round or subrectangular fireplace.
8.
Juvenile whorls are depressed subtrapizoidal to subrectangular in section, with slightly convex flanks, arched venter, and well defined ventrolateral shoulders.
9.
In the 20th century there was additional damage in the form of a subrectangular earthwork mound said to be an " orgone accumulator ".
10.
"Tarsopterella " is distinguished by its prosoma ( head ), which is subrectangular and slightly concave in front, with small compound eyes.
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