amphibian 发表于 2025-3-26 21:45:50
system with some built-in symmetry. Should one expect periodic motions which somehow reflect this symmetry? And how would periodicity harmonize with symmetry? Probing into these questions leads from dynamics to topology, algebra, singularity theory, and to many applications. Within a global approacOptimum 发表于 2025-3-27 04:29:01
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David Simpsonents; (2) radiation-events; (3) spreading-events; (4) extinction-events with stepwise or/and contemporaneous, rapid extinctions..Probable causes for global bio-events are (1) cosmic causes, such as (1a) changes caused by the revolution of the solar‘s system within the Galaxy and (1b) impact of cosmiNUL 发表于 2025-3-27 15:45:19
http://reply.papertrans.cn/83/8291/829010/829010_35.pngMystic 发表于 2025-3-27 18:04:43
David Simpsonric clades, and punctualistic (anagenetic) changes operating on suprageneric levels. Anagenetic characteristics, such as loss of bithecae and reduction of first order stipes (progressive atrophies from quadriradiate, through triradiate to biradiate organizational schemes) are achieved polyphyletical放牧 发表于 2025-3-28 00:29:50
David Simpsonric clades, and punctualistic (anagenetic) changes operating on suprageneric levels. Anagenetic characteristics, such as loss of bithecae and reduction of first order stipes (progressive atrophies from quadriradiate, through triradiate to biradiate organizational schemes) are achieved polyphyleticalgait-cycle 发表于 2025-3-28 05:23:25
http://reply.papertrans.cn/83/8291/829010/829010_38.pngDecimate 发表于 2025-3-28 07:55:51
David Simpsonntage of the ecostratigraphic approach in our work. This means that we will carefully collect, stratum by stratum, data about the stratigraphic ranges of the individual taxa within individual community groups, biofacies narrowly construed, as opposed to the all too customary habit of lumping taxa frobjection 发表于 2025-3-28 13:37:54
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