Ammonoid shell involute and compressed Metengonoceras 3D model

Information: This model emulates the extremely involute ammonoid shell of Metengoceras. An ammonoid of the Cretaceous. Single or branching irregular ribs and variably placed tubercles may occur. Sutures have numerous auxiliary and adventive elements of similar form, in general radially arranged (Klug et al., 2015). Ammonoids are a diverse group of extinct cephalopods bearing an external shell similar to Nautilus but closely related to modern coleoids, a group that includes cuttlefishes, octopuses, squids, among others (Hoffmann et al., 2022) . These organisms inhabited the ancient oceans from the Early Devonian to the earliest Palaeogene period, reaching an interval of approximately 350 million years across the Phanerozoic (Landman et al., 2015; Lehmann, 2015). Fossils of this external conch represent one of the most common findings in marine assemblages, showing a highly diverse and abundant record around the world (Saunders & Swan, 1984; Saunders et al., 2004; Korn & Klug, 2012; Morón-Alfonso et al., 2023, figs. 3-4). Because the ammonoid conch grew along with the animal soft-body, this structure frequently records valuable information including morphological modifications that occurred during ontogeny useful to study the paleobiology and paleoecology of this group (Kullmann & Scheuch, 1970; Kant, 1973; Korn, 2012; Erlich et al., 2016). By making a purchase, you are helping to fund future research on these fascinating creatures. If you're interested in exploring more fossil models, feel free to check out my profile for other options.References:Erlich, A., Moulton, D. E., Goriely, A., & Chirat, R., 2016, Morphomechanics and developmental constraints in the evolution of ammonites shell form: Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, v. 326, p. 437-450.Hoffmann, R., Howarth, M., Fuchs, D., Klug, C., & Korn, D., 2022, The higher taxonomic nomenclature of Devonian to Cretaceous ammonoids and Jurassic to Cretaceous ammonites including their authorship and publication: Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, v. 305, p. 187-197.Kant, R., 1973, Allometrisches Wachstum paläozoischer Ammonoideen: Variabilität und Korrelation einiger Merkmale: Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, v. 143, p. 153-192.Klug, C., Korn, D., Landman, N. H., Tanabe, K., De Baets, K., & Naglik, C., 2015, Describing Ammonoid Conchs, in Klug, C., Korn, D., De Baets, K., Kruta, I., & Mapes, R. H., eds., Ammonoid Paleobiology: From anatomy to ecology. Topics in Geobiology, vol 43, Volume Topics in Geobiology, vol 43: Dordrecht, Springer Netherlands, p. 3-24.Korn, D., 2012, Quantification of ontogenetic allometry in ammonoids, v. 14, p. 501-514.Korn, D., & Klug, C., 2012, Palaeozoic ammonoids – diversity and development of conch morphology, in Talent, J. A., ed., Earth and Life: Global Biodiversity, Extinction Intervals and Biogeographic Perturbations Through Time, Volume 1: Dordrecht, Springer Netherlands, p. 491-534.Kullmann, J., & Scheuch, J., 1970, Wachstums-änderungen in der onto-genese paläozoischer ammonoideen: Lethaia, v. 3, no. 4, p. 397-412.Landman, N. H., Goolaerts, S., Jagt, J. W. M., Jagt-Yazykova, E. A., & Machalski, M., 2015, Ammonites on the Brink of Extinction: Diversity, Abundance, and Ecology of the Order Ammonoidea at the Cretaceous/Paleogene (K/Pg) Boundary, in Klug, C., Korn, D., De Baets, K., Kruta, I., & Mapes, R. H., eds., Ammonoid Paleobiology: From macroevolution to paleogeography: Dordrecht, Springer Netherlands, p. 497-553.Lehmann, J., 2015, Ammonite Biostratigraphy of the Cretaceous—An Overview, in Klug, C., Korn, D., De Baets, K., Kruta, I., & Mapes, R. H., eds., Ammonoid Paleobiology: From macroevolution to paleogeography. Topics in Geobiology, vol 43: Dordrecht, Springer Netherlands, p. 403-429.Morón-Alfonso, D., Cichowolski, M., Hoffmann, R., Korn, D., Vennari, V., & Allaire, N., 2023, The intriguing shapes of the ammonoid whorl: Palaeontologia Electronica, v. 26, p. 1-23.Saunders, W. B., & Swan, A. R. H., 1984, Morphology and Morphologic Diversity of Mid-Carboniferous (Namurian) Ammonoids in Time and Space: Paleobiology, v. 10, p. 195-128.Saunders, W. B., Work, D. M., & Svetlana, V. N., 2004, The Evolutionary History of Shell Geometry in Paleozoic Ammonoids: Paleobiology, v. 30, p. 19-43.