Your ammonite probably is...
Arcestes
Suture: Ammonitic
Arcestes was a broad ammonite with a rounded venter and many whorls. It was smooth or had faint radial ribs. It is an unusual ceratite, as it has an ammonititc suture. Arcestes is found in Triassic rocks.
Image by Hollófernyiges, CC BY-SA 4.0, https://commons.wikimedia.org/wiki/File:Arcestes_neortus.jpg
