Halortidae

Halortidae
Temporal range: U Triassic
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ceratitida
Superfamily: Tropitaceae
Family: Halortidae
Mojsisovics 1893
subfamilies
Haloritinae
Sagenitinae
Episculitinae

The Haloritidae is an ammonoid family belonging to the Ceratitida and placed in the Tropitaceae, a superfamily. The Haloritidae are characteristically subglobose and involute, commonly with lateral ribs that may cross the venter. In some the ribs may have nodes. Ventral keels and furrows are atypical. The last volution (whorl) is commonly eccentric. Sutures are ammonitic, ceratic, or goniatitic.

The family Haloritidae was named by Mojsisovics in 1893. Fossils come from the Upper Triassic.

Taxonomy

The Haloritidae are divided into 3 sufamilies,the:

Haloritinae Mojsisovics 1893; haloritids in which spiral ornamentation is weak or absent. Genera include Halorites, Homerites, and Jovites.

Sagenitinae Spath 1951; haloritids with prominent spiral ornamentation and more complex sutures. Genera include Sagenites and Trachysagenites.

Episculitinae Spath 1951; haloritids in which the body chamber becomes uncoiled and the suture is simplified. Genera include Episculites and Euiscalites.

References