n.one of the coiled chambered fossil shells of extinct mollusks

同義詞：ammonoid

On New Ammonites from the English Chalk
Cretaceous plesiosaurs ate ammonites
Shell abnormalities in scaphitid ammonites
Maastrichtian Ammonites from the Biscay Region (France, Spain)
The role of ammonites in the Mesozoic marine food web revealed by jaw preservation.
Evolutionary size increase and longevity in Jurassic bivalves and ammonites
Alleged mosasaur bite marks on Late Cretaceous ammonites are limpet (patellogastropod) home scars
Scaphitid Ammonites of the Upper Cretaceous (Maastrichtian) Fox Hills Formation in South Dakota and Wyoming. by Neil H. Landman; Ka...
Combining ontogenetic and evolutionary scales of morphological disparity: a study of early Jurassic ammonites.
High-resolution dynamics of Early Jurassic marine extinctions: the case of Pliensbachian–Toarcian ammonites (Cephalopoda)