Magalus
Magalus is an extinct genus of ammonoid cephalopods that lived during the Late Cretaceous period, approximately 95 to 80 million years ago. It belongs to the family Magalidae within the order Ammonitida, and its taxonomic placement has been confirmed by both morphological and stratigraphic evidence. The genus was first described in 1875 by the American paleontologist Dr. Maria Rath, who noted its distinctive smooth, involute shells and relatively large umbilicus. The name "Magalus" was derived from the Latin word for "great" or "large," reflecting the impressive size of the specimens.
Fossils of Magalus have been discovered primarily in marine sedimentary deposits of the western United States
Recent research has employed high-resolution computed tomography to examine the internal whorl structure of Magalus shells,