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Fajingshania Renovata
''Fanjingshania'' is an extinct genus of acanthodian from the lower Silurian The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozo ... of China, making it currently the oldest known acanthodian. It comprises a single species, ''Fanjingshania renovata''. References {{Taxonbar, from=Q115766467 Acanthodii genera Silurian fish of Asia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2022 In Paleontology
Flora Plants Fungi Newly named fungi Mycological research * A study on the anatomy of specimens of ''Prototaxites'' from the Heider quarry in Germany and the Bordeaux quarry in Canada is published by Vajda ''et al.'' (2022), who interpret specimens of ''Prototaxites'' as fungi and as rhizomorphs. * Yang ''et al.'' (2022) describe new fossil material of '' Daohugouthallus ciliiferus'' from the Jurassic Jiulongshan Formation (China), providing evidence that this macrolichen inhabited a gymnosperm branch, and name a new family Daohugouthallaceae placed within the class Lecanoromycetes. "Algae" Floral research * Sforna ''et al.'' (2022) report the discovery of bound nickel-tetrapyrrole moieties preserved within cells of a ~1-billion-years-old eukaryote '' Arctacellularia tetragonala'' from the BII Group of the Mbuji-Mayi Supergroup (Democratic Republic of the Congo), identify the tetrapyrrole moieties as chlorophyll derivatives, and interpret ''A. tetragonala'' as one of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthodian
Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes), typically considered a paraphyletic group. They are currently considered to represent a grade of various fish lineages leading up to the extant Chondrichthyes, which includes living sharks, rays, and chimaeras. Acanthodians possess a mosaic of features shared with both osteichthyans (bony fish) and chondrichthyans (cartilaginous fish). In general body shape, they were similar to modern sharks, but their epidermis was covered with tiny rhomboid platelets like the scales of holosteians (gars, bowfins). A lower Silurian species, ''Fanjingshania renovata'', attributed to Climatiiformes is the oldest chondrichthyan with known anatomical features. The popular name "spiny sharks" is because they were superficially shark-shaped, with a streamlined body, paired fins, a strongly upturned tail, and stout, largely immovable bony spines supporting all the fins except the tail—hence, "spiny sharks". However, acan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozoic Era. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out. One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods (myriapods, arachnids and hexapods) became fully terrestrialized. A significant evolutionary milestone during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthodii Genera
Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes), typically considered a paraphyletic group. They are currently considered to represent a grade of various fish lineages leading up to the extant Chondrichthyes, which includes living sharks, rays, and chimaeras. Acanthodians possess a mosaic of features shared with both osteichthyans (bony fish) and chondrichthyans (cartilaginous fish). In general body shape, they were similar to modern sharks, but their epidermis was covered with tiny rhomboid platelets like the scales of holosteians (gars, bowfins). A lower Silurian species, ''Fanjingshania renovata'', attributed to Climatiiformes is the oldest chondrichthyan with known anatomical features. The popular name "spiny sharks" is because they were superficially shark-shaped, with a streamlined body, paired fins, a strongly upturned tail, and stout, largely immovable bony spines supporting all the fins except the tail—hence, "spiny sharks". However, acant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
