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Mosura Fentoni
''Mosura fentoni'' () is an extinct species of hurdiid radiodont from the Cambrian Burgess Shale in British Columbia, Canada. ''F. fentoni'' is the monotypic taxon, only species in the genus ''Mosura'', and is known from sixty specimens collected between 1990 and 2022. Discovery and naming ''Mosura fentoni'' is known from sixty specimens. The holotype, ROMIP 67995 preserves a complete individual in dorsal view. Other notable specimens are ROMIP 66108, ROMIP 67998, ROMIP 68004, ROMIP 67999, and ROMIP 67979, which all preserve internal organs. The specimens were discovered in the Raymond Quarry and Marble Canyon (Canadian Rockies), Marble Canyon localities within the Burgess Shale from 1990 to 2022, with the majority being placed in the invertebrate paleontology collection of the Royal Ontario Museum (ROMIP). 2025, Moysiuk & Caron Species description, described ''Mosura fentoni'' as a new genus and species of radiodont based on these fossil remains. The Genus, generic name, '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miaolingian
The Miaolingian is the third Series of the Cambrian Period, and was formally named in 2018. It lasted from about to million years ago and is divided in ascending order into 3 stages: the Wuliuan, Drumian, and Guzhangian. The Miaolingian is preceded by the unnamed Cambrian Series 2 and succeeded by the Furongian series. It is named after the Miaoling Mountains in southeastern Guizhou Province, China. Definition A number of proposals for fossils and type sections were made before it was formally ratified in 2018. The most promising fossil markers were seen to be the respective first appearances of either trilobite species ''Ovatoryctocara granulata'' or ''Oryctocephalus indicus'', which both have an age close to million years ago. After some deliberation, the FAD of ''Oryctocephalus indicus'' was chosen to be the lower boundary marker, and the GSSP was placed in the Kaili Formation, Wuliu-Zengjiayan, Guizhou, China. The Miaolingian-Furongian boundary has the same definition a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toho
is a Japanese entertainment company that primarily engages in producing and distributing films and exhibiting stage plays. It is headquartered in Chiyoda, Tokyo, and is one of the core companies of the Osaka-based Hankyu Hanshin Toho Group. Toho is best known for producing and distributing many of Ishirō Honda and Eiji Tsuburaya's ''kaiju'' and ''tokusatsu'' films as well as the films of Akira Kurosawa and the anime of Studio Ghibli, Shin-Ei Animation, TMS Entertainment, CoMix Wave Films, and OLM, Inc. The company has released the majority of the highest-grossing Japanese films, and through its subsidiaries, is the largest film importer in Japan. The Doraemon film series, distributed by Toho since 1980, is the highest-grossing film series and anime film series in Japan. It is also one of the highest-grossing non-English language film series. Toho Company Limited logo with full name in native language Toho's most famous creation is Godzilla, featured in 33 of the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiodonta
Radiodonta is an extinct Order (biology), order of stem-group arthropods that was successful worldwide during the Cambrian period. Radiodonts are distinguished by their distinctive frontal appendages, which are morphologically diverse and were used for a variety of functions. Radiodonts were among the earliest large predators, but they also included sediment sifters and filter feeders. Some of the most famous species of radiodonts are the Cambrian taxa ''Anomalocaris, Anomalocaris canadensis'', ''Hurdia, Hurdia victoria'', ''Peytoia nathorsti'', ''Titanokorys gainesii, Titanokorys gainesi, Cambroraster, Cambroraster falcatus'' and ''Amplectobelua, Amplectobelua symbrachiata''. The later surviving members include the subfamily Aegirocassisinae from the Early Ordovician of Morocco and the Early Devonian member ''Schinderhannes bartelsi'' from Germany. Etymology The name Radiodonta (Latin for ''radius'' "spoke of a wheel" and Greek for ''odoús'' "tooth") refers to the radial arrang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basal (phylogenetics)
In phylogenetics, basal is the direction of the ''base'' (or root) of a phylogenetic tree#Rooted tree, rooted phylogenetic tree or cladogram. The term may be more strictly applied only to nodes adjacent to the root, or more loosely applied to nodes regarded as being close to the root. Note that extant taxa that lie on branches connecting directly to the root are not more closely related to the root than any other extant taxa. While there must always be two or more equally "basal" clades sprouting from the root of every cladogram, those clades may differ widely in taxonomic rank, Phylogenetic diversity, species diversity, or both. If ''C'' is a basal clade within ''D'' that has the lowest rank of all basal clades within ''D'', ''C'' may be described as ''the'' basal taxon of that rank within ''D''. The concept of a 'key innovation' implies some degree of correlation between evolutionary innovation and cladogenesis, diversification. However, such a correlation does not make a given ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuxianhuia
''Fuxianhuia'' is a genus of Lower Cambrian fossil arthropod known from the Chengjiang fauna in China. Its purportedly primitive features have led to it playing a pivotal role in discussions about the euarthropod stem group. Nevertheless, despite being known from many specimens, disputes about its morphology, in particular its head appendages, have made it one of the most controversial of the Chengjiang taxa, and it has been discussed extensively in the context of the arthropod head problem. The genus is named after Fuxian Lake (''Fuxian Hu''), where it was unearthed. Its specific name (zoology), specific name ''wikt:protensus, protensa'' refers to its extended trunk. Description Complete ''Fuxianhuia'' specimens are approximately 4 centimetres long. The anterior of ''Fuxianhuia'' is encased in an oval sclerite, from which two stalked eyes emerge. Inserting directly behind this sclerite, on the head shield proper, are two stout antennae. When the head of ''Fuxianhuia'' was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuxianhuiid
Fuxianhuiida is an extinct clade of arthropods from the Cambrian of China. All currently known species are from Cambrian Series 2 aged deposits in Yunnan Province, including the Chengjiang biota. Although historically suggested to be members of the arthropod stem group recent research has suggested that they may be closely related to mandibulates. Many specimens are known with exceptional soft tissue preservation, including preserved guts and neural tissue, which given their basal phylogenetic position makes them important in understanding the evolution of Arthropoda as a whole. They reach a size of up to 15 cm, and are interpreted as benthic predators and scavengers. The Fuxianhuiid exoskeleton is unmineralised, and the number of tergites ranges from 15 to over 40. The cephalon is covered by a head shield and contains stalked eyes connected by the anterior sclerite, antennae, a butterfly shaped hyposome and a posterior facing mouth. Fuxianhuiids possess specialized post ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod
Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an arthropod exoskeleton, exoskeleton with a cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate, a body with differentiated (Metamerism (biology), metameric) Segmentation (biology), segments, and paired jointed appendages. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. They form an extremely diverse group of up to ten million species. Haemolymph is the analogue of blood for most arthropods. An arthropod has an open circulatory system, with a body cavity called a haemocoel through which haemolymph circulates to the interior Organ (anatomy), organs. Like their exteriors, the internal organs of arthropods are generally built of repeated segments. They have ladder-like nervous systems, with paired Anatomical terms of location#Dorsal and ventral, ventral Ventral nerve cord, nerve cord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanleycaris Hirpex
''Stanleycaris'' ("Stanley's shrimp") is an extinct genus of hurdiid radiodont from the Cambrian (Stage 3 to Miaolingian). The type species is ''Stanleycaris hirpex''. ''Stanleycaris'' was described from the Stephen Formation near the Stanley Glacier and Burgess Shale locality of Canada, as well as Wheeler Formation of United States. A second species, ''S. qingjiangensis'' is known from the Qingjiang biota of China. The genus was characterized by the rake-like frontal appendages with robust inner spines. History of discovery ''Stanleycaris'' was originally described only from frontal appendages and oral cone. Its generic name means "Crab of Stanley Glacier"; ''hirpex'', L. "large rake", reflects the rake-like nature of its spiny frontal appendages. However, in 2022, 268 specimens of ''Stanleycaris'', many of which were complete, were studied, making ''Stanleycaris'' a well documented radiodont. ''Stanleycaris'' had three eyes, a bizarre configuration previously unknown among othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amplectobelua Symbrachiata
''Amplectobelua'' (meaning "embracing beast") is an extinct genus of late Early Cambrian amplectobeluid radiodont, a group of stem arthropods that mostly lived as free-swimming predators during the first half of the Paleozoic Era. Anatomy ''Amplectobelua'' was a giant radiodont, with the largest specimen of ''A. symbrachiata'' reaching up to in body length excluding the frontal appendages and tail. ''A. stephenensis'' is much smaller, estimated up to long. The body structures other than frontal appendages are only known from the type species ''Amplectobelua symbrachiata''. Like other radiodonts, ''Amplectobelua'' had a pair of jointed frontal appendages, a head covered by dorsal and lateral sclerites (the latter had been misinterpreted as huge eyes), a limbless body with dorsal gills (setal blades), and a series of flaps on both sides that extended along the length of its body. ''Amplectobelua'' had a specialized frontal appendage, in which it has a distinct 3-segmented s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
