Evolution of the Ammonoids

Kate LoMedico Marriott is a graduate researcher in paleontology. She trained in sculpture at the State University of New York at Purchase, then earned an interdisciplinary B.A. at State University of New York at New Paltz, and a M.S. in Earth and Environmental Sciences at Brooklyn College in New York in 2021. She is the former in-house paleontologist at Astro Gallery of Gems on Fifth Avenue in New York City and the author or co-author of several publications on ammonites, including one systematizing the paleoart theory of heteromorph ammonites (now in press) and a new method for fractal analysis of ammonite sutures (in preparation). She has also submitted research in fossil mammals for publication in the near future. Kate was a Special Mention Finalist in the International Award on Scientific Illustration in Madrid, Spain for her work on heteromorphs. In 2020, Kate became the second paleoartist to be inducted into the Ocean Artists Society. She is also the co-founder of The Society of Invertebrate Paleoartists. Alexander Bartholomew is an Associate Professor at the State University of New York at New Paltz in the Department of Geology, having taught Stratigraphy and Paleontology for over 15 years. He earned his M.S. and Ph.D. in Geology from the University of Cincinnati and his B.S. in Geology from Union College. Alex's area of expertise is in Upper Silurian and Lower-Middle Devonian stratigraphy and paleoecology, spanning marine, marginal marine, and terrestrial environments in eastern North America. Alex is a Corresponding Member of the International Subcommission on Devonian Stratigraphy (SDS), is an organizer/field excursion leader for the upcoming SDS meeting and field excursion in New York State in 2022, and is co/lead author on several papers in the forthcoming New York State Museum monograph on Devonian Stratigraphy in New York State. Donald R. Prothero is Research Associate in Vertebrate Paleontology at the Natural History Museum of Los Angeles County. He taught college geology and paleontology for over 43 years, at such places as Caltech, Columbia University, Vassar College, Occidental College, Knox College, and Pierce College, and currently at Cal Poly Pomona He earned his M.A., M.Phil., and Ph.D. degrees in geological sciences from Columbia University, and a B.A. in geology and biology (highest honors, Phi Beta Kappa) from the University of California, Riverside. He is currently the author, co-author, editor, or co-editor of over 48 books and over 333 scientific papers, including 8 leading geology textbooks and 18 trade books as well as edited symposium volumes and other technical works.

Ammon’s Horns and Serpent Stones
Anatomy, Growth, and Geometry
Spirals and Squiggles: The Math of Ammonites
The First Cephalopod: A Snail Who Dared to Fly
Colonizing The Wild Blue Beyond: The First Ammonoids in the Age of Fish
Survivors: Prolecanitids, Ceratitids, and the Origin of Ammonites
Jurassic Seapark
The Cretaceous Period: The Golden Autumn of Ammonites
Ancyloceratina: The Heteromorphs
Extinction of the Ammonoids: What Humans Can Learn
Glossary