Results 11 to 20 of about 373,057 (342)
Fossils improve phylogenetic analyses of morphological characters
bioRxiv, 2020 Fossils provide our only direct window into evolutionary events in the distant past. Incorporating them into phylogenetic hypotheses of living clades can help elucidate macroevolutionary patterns and processes, such as ancestral states and ...
N. M. Koch, R. Garwood, L. Parry
semanticscholar +1 more source
Microscopic recognition of micro fossils in carbonate rocks based on convolutional neural network
Shiyou shiyan dizhi, 2021 The identification of microfossils in carbonate rocks with thin-section observation is of great significance for the study of sedimentary environment, but the traditional method by manual identification is highly experience required and is greatly ...
Xiaolu YU +4 more
doaj +1 more source
Rates and Rocks: Strengths and Weaknesses of Molecular Dating Methods
Frontiers in Genetics, 2020 I present here an in-depth, although non-exhaustive, review of two topics in molecular dating. Clock models, which describe the evolution of the rate of evolution, are considered first.
Stéphane Guindon
doaj +1 more source
Geo&Bio, 2019 The palaeontological collection of the Geological Department of the National Museum of Natural History NAS of Ukraine (NMNH NASU) is among the most valuable objects of the national scientific and cultural heritage. The article presents a brief analytical
G. V. Anfimova +3 more
doaj +1 more source
Frontiers in Earth Science, 2023 Islands are a classic focus for evolutionary studies. One topic of great interest has been the evolution of “dwarfs,” significantly smaller island mammals relative to their continental counterparts.
Shoji Hayashi +9 more
doaj +1 more source
The Clicking Elateroidea from Chinese Mesozoic Deposits (Insecta, Coleoptera)
Insects, 2020 Recent molecular studies have suggested that the clicking beetle families Elateridae, Eucnemidae, Throscidae, and Cerophytidae evolved in the Jurassic and diversified in the Cretaceous.
Jyrki Muona, Huali Chang, Dong Ren
doaj +1 more source
Analisis Sisa Gajah Dari Kecamatan Tamban, Kabupaten Batola (Kalimantan Selatan): Suatu Pengumuman
Berkala Arkeologi, 1989 Dalam tahun 1987 Pusat Penelitian Arkeologi Nasional diminta untuk mengoreksi suatu temuan yang baru dilakukan oleh Bidang Permuseuman Sejarah dan Purbakala Kantor Wilayah Departemen Pendidikan dan Kebudayaan Propinsi Kalimantan Selatan.
Rokus Due Awe
doaj +1 more source
Earth's earliest and deepest purported fossils may be iron-mineralized chemical gardens
Proceedings of the Royal Society B, 2019 Recognizing fossil microorganisms is essential to the study of life's origin and evolution and to the ongoing search for life on Mars. Purported fossil microbes in ancient rocks include common assemblages of iron-mineral filaments and tubes.
S. McMahon
semanticscholar +1 more source