故意钓到白杨
发表于 2025-3-28 15:54:47
https://doi.org/10.1007/978-3-662-26191-0the origin of bactritids as well as the origin of bactritids with their respective Bauplan characters. We also list major morphological changes that occurred between the origin of cephalopods until the early evolution of ammonoids.
领先
发表于 2025-3-28 21:53:11
Einleitung und Problemstellung,uture line indented on the lobes only, the Triassic quasi-monophyletic clade shows a remarkable biostratigraphic and geographic record. However, very few studies have thoroughly investigated their evolutionary trends, except for taxonomic richness. Although Triassic ammonoids show a very large range
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发表于 2025-3-29 00:59:36
https://doi.org/10.1007/978-3-662-28988-4xamine trends among Jurassic ammonoids. First, a compilation of selected literature on evolutionary patterns and trends leads to the conclusion that such trends have rarely been studied among Jurassic ammonoids and even more rarely are they formally studied using statistical tests. Second, a prelimi
侧面左右
发表于 2025-3-29 06:39:08
https://doi.org/10.1007/978-3-662-28988-4any species, individuals range from slender, involute, compressed, and weakly ornamented forms to “robust” forms, which are more evolute, more depressed, and with coarser ornamentation. Additionally, more compressed shells tend to have more complex sutures. Within a species from a single sample, the
凝乳
发表于 2025-3-29 10:02:27
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灌输
发表于 2025-3-29 11:57:41
,Rechte Winkel für runde Räume,intervals of well-expressed provincialism. The Devonian appears to be a time with general cosmopolitanism with a slowly increasing differentiation of ammonoid provinces by increasing endemism of cosmopolitan genera. In the Carboniferous, clearly separated provinces characterized by ammonoid assembla
过时
发表于 2025-3-29 16:29:27
https://doi.org/10.1007/978-3-322-85315-8 associated with sudden biogeographic changes often closely related to major climatic and oceanographic changes. Previous biogeographic studies of Triassic ammonoids have rarely focused on a specific time-interval and were rarely based on quantitative methods. Thus, we will first review biogeographi
共同生活
发表于 2025-3-29 23:05:54
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abolish
发表于 2025-3-30 01:23:15
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Felicitous
发表于 2025-3-30 06:34:09
Risikokonflikte und Wertwandel,stribution. Their paleobiogeographic distributions were influenced by changing continental positions, currents, sea level change, and perhaps by their mode of life as reflected in the evolution of many diverse lineages of heteromorphic, possibly rather vertically migrating than horizontally swimming