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Minchinellidae
Minchinellidae is a family of calcareous sponges, members of the class Calcarea. It is the only family in the monotypic order Lithonida. The families Petrobionidae (genus '' Petrobiona'') and Lepidoleuconidae (genus '' Lepidoleucon'')''Treatise on Invertebrate Paleontology'' Part E, Revised. Porifera, Volume 3: Classes Demospongea, Hexactinellida, Heteractinida & Calcarea, xxxi + 872 p., 506 fig., 1 table, 2004, availablhere . have also sometimes been placed within Lithonida, though more recently they have been moved to the order Baerida.''Treatise on Invertebrate Paleontology'' Part E, Revised. Porifera, Volumes 4 & 5: Hypercalcified Porifera, Paleozoic Stromatoporoidea & Archaeocyatha, liii + 1223 p., 665 figs., 2015, availablhere . Thanks to their hypercalcified structure, minchinellids have a fossil record reaching as far back as the Jurassic Period. Description Minchinellids are hypercalcified sponges. They have a robust skeleton of tetractine (four-rayed) calcareous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porosphaera (sponge)
''Porosphaera'' is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (''incertae sedis''), and it has not yet been placed with certainty into any class, order, or family. See also * List of Ascomycota genera incertae sedis, List of Ascomycota genera ''incertae sedis'' References Enigmatic Ascomycota taxa Taxa named by Barthélemy Charles Joseph Dumortier {{Ascomycota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plectroninia
''Plectroninia'' is a genus of sponges belonging to the family Minchinellidae Minchinellidae is a family of calcareous sponges, members of the class Calcarea. It is the only family in the monotypic order Lithonida. The families Petrobionidae (genus '' Petrobiona'') and Lepidoleuconidae (genus '' Lepidoleucon'')''Treati .... The species of this genus are found in Europe and Australia. Species: *'' Plectroninia celtica'' *'' Plectroninia deansi'' *'' Plectroninia halli'' References {{Taxonbar, from=Q6538544 Calcaronea Sponge genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petrostroma
''Petrostroma'' is a genus of calcareous sponges belonging to the family Minchinellidae. Fossil species of this genus are found in Europe, but the extant type species, ''P. schulzei'', is found in Sagami Bay, Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ....Vacelet, Jean, et al. "Order Lithonida Vacelet, 1981, Recent." Systema Porifera. Springer, Boston, MA, 2002. 1185-1192. Species: * ''Petrostroma schulzei'' Döderlein, 1892 References {{Taxonbar, from=Q18520279 Calcaronea Sponge genera Animal genera with one living species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuning Fork
A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs ( ''tines'') formed from a U-shaped bar of elastic metal (usually steel). It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out. A tuning fork's pitch depends on the length and mass of the two prongs. They are traditional sources of standard pitch for tuning musical instruments. The tuning fork was invented in 1711 by British musician John Shore, sergeant trumpeter and lutenist to the royal court. Description A tuning fork is a fork-shaped acoustic resonator used in many applications to produce a fixed tone. The main reason for using the fork shape is that, unlike many other types of resonators, it produces a very pure tone, with most of the vibrational energy at the fundamental frequency. The reason for this is that the frequency of the first overtone is about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcaronea
Calcaronea is a subclass of sea sponges Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a basal clade and a sister taxon of the diploblasts. They are sessile filter feeders that are bound to the seabed, and are on ... in the class Calcarea. They are Calcarea with the triactines and the basal system of tetractines sagittal (i.e. the rays of the spicule make unequal angles with each other), exceptionally regular. In ontogeny the first spicules to be secreted are diactines. Choanocytes are apinucleate. Calcaronea have amphiblastula larvae External links * * Sponge subclasses {{calcarea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porosphaerella (sponge)
''Porosphaerella'' is a genus consisting of (possibly only one) or three species of fungi in the family Cordanaceae. Was formerly in the ''Chaetosphaeriaceae The Chaetosphaeriaceae are a family of fungi in the Ascomycota, class Sordariomycetes. The family was circumscribed by Martina Réblová, Margaret Elizabeth Barr Bigelow, and Gary Samuels in 1999. Species in the family have a cosmopolitan distrib ...'' family. References External links * Sordariomycetes genera Chaetosphaeriales {{Sordariomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
