2011/11/01 by Т. Б. Леонова, M. S. Boiko · 1 citation
Earth and Planetary Sciences · Environmental Science · #Marine Biology and Ecology Research #Coral and Marine Ecosystems Studies #Geology and Paleoclimatology Research
paper · doi:10.1134/s0031030111060086
openalex publication_date 2011/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/19
The paper discusses various interpretations of the taxonomy and phylogeny of the Late Paleozoic ammonoid family Thalassoceratidae, including our own interpretation of the composition and evolution of this group. We propose a revised classification and phylogenetic reconstruction of thalassoceratids, and provide updated information on the stratigraphic and geographical distribution of thalassoceratid species. Examination of the inner whorls of Thalassoceras gemmellaroi, Aristoceras appressum , and Prothalassoceras bashkiricum has shown that the siphuncle was nonventral throughout the first whorl.