Description. According to Wright and Kennedy (1984), this genus is rather evolute, with a whorl section that is circular, compressed oval, or parallel-sided, and a venter that is broadly or narrowly rounded. It bears more or less sinuous constrictions, often bordered by a ridge anteriorly and sometimes posteriorly, separated by groups of fine ribs of the same course that cross the venter, forming a proverse sinus or chevron. The finely indented suture has a strongly retracted suspensive lobe. The macroconchs are large (50 cm or more), but only nuclei or microconchs are known for most species.
Subgenera. The cosmopolitan subgenus Puzosia sensu stricto (type Ammonites planulatus, J. de C. Sowerby, 1827) existed from the Albian to the Campanian. Its ribs are simple and limited to the outer half of the flanks. The microconchs may have coarser ribs on the body chamber. On the last whorl of macroconchs, the ribs and constrictions may weaken or be replaced by tubercles or widely spaced, strong ribs. The subgenus Anapuzosia Matsumoto, 1954 (type Puzosia buenaventura Anderson, 1938) has ribs originating near the umbilical margin, and secondaries separating from primaries or intercalating mid-flank. The ribs and constrictions are sinuous. The body chamber of the macroconchs bears only strong and distant ribs. The genus Puzosia is found from the Albian to the Cenomanian in Western Europe, Russia (Crimea), Angola, Madagascar, California, Venezuela, Ecuador, Brazil, and Japan.
Remarks. As the subgenus Puzosia includes many similar species, a revision by Wiedmann and Dieni (1968) retains in the Albian only two variable and long-lived species: P. quenstedti (Parona & Bonarelli, 1897), restricted to the Albian, and P. mayoriana (d'Orbigny, 1841), which rises into the Cenomanian. These authors define P. quenstedti sensu largo by the presence of 6 or 7 constrictions per whorl, less sinuous and pronounced than in P. mayoriana, convex sinuses on venter, flanks that are more or less flattened but converge towards a broadly rounded venter, and a moderately open umbilicus. The following species, in decreasing order of H/T ratios, become subspecies: P. communis Spath, P. furnitana Pervinquière, P. quenstedti, P. media Seitz, and P. petkovici Wiedmann & Dieni. P. mayoriana sensu largo is defined by 4 to 6 constrictions, more marked and more sinuous, ventral sinuses that are most often angular, subparallel or more rarely rounded flanks, a wider venter, and a generally more open umbilicus. It gathers the following species: P. mayoriana (d'Orbigny), P. provincialis (Parona & Bonarelli, 1897), and P. lata Seitz.
Scholz (1979, pp. 63-66), supported by Wright and Kennedy (1984), proposes a more radical revision. He links most of the Albian and Cenomanian Puzosia to Puzosia planulata (Sowerby, 1827), in particular P. quenstedti, P. provincialis, and P. lata. However, some authors dispute both of these revisions, for example, Latil et al. (2022).