Phylogenetic and physiological signals in metazoan fossil biomolecules
نویسندگان
چکیده
منابع مشابه
Conflicting phylogenetic signals at the base of the metazoan tree.
A phylogenetic framework is essential for under-standing the origin and evolution of metazoan development. Despite a number of recent molecular studies and a rich fossil record of sponges and cnidarians, the evolutionary relationships of the early branching metazoan groups to each other and to a putative outgroup, the choanoflagellates, remain uncertain. This situation may be the result of the ...
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Stein Jr., W.E., 1987. Phylogenetic analysis and fossil plants. Rev. Palaeobot. Palynol., 50:31 61. This paper presents a perspective on the relat ionship between cladistic methods and the study of fossil plants. Paleobotany has been slow in evaluat ing the potent ial of these and other explicit methods compared to other branches of systematics. However, the unique or part icular ly difficult p...
متن کاملPhylogenetic Context and Basal Metazoan Model Systems1
SYNOPSIS. In comparative studies using model organisms, extant taxa are often referred to as basal. The term suggests that such taxa are descendants of lineages that diverged early in the history of some larger taxon. By this usage, the basal metazoans comprise just four phyla (Placozoa, Porifera, Cnidaria, and Ctenophora) and the large clade Bilateria. We advise against this practice because b...
متن کاملPhylogenetic context and Basal metazoan model systems.
In comparative studies using model organisms, extant taxa are often referred to as basal. The term suggests that such taxa are descendants of lineages that diverged early in the history of some larger taxon. By this usage, the basal metazoans comprise just four phyla (Placozoa, Porifera, Cnidaria, and Ctenophora) and the large clade Bilateria. We advise against this practice because basal refer...
متن کاملOxygen-collagen priority and the early metazoan fossil record.
The thesis is developed that a low oxygen level Precambrian atmosphere presented early-evolving metazoan organisms with physiological connective tissue priorities resulting from the important molecular oxygen requirements in the biosynthesis of collagen hydroxyproline. Shells, cuticles, and carapaces which are not mandatory metazoan prerequisites but which directly or indirectly demand substant...
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ژورنال
عنوان ژورنال: Science Advances
سال: 2020
ISSN: 2375-2548
DOI: 10.1126/sciadv.aba6883