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Haidomyrmecinae
Haidomyrmecinae, occasionally called hell ants, are an extinct subfamily of ants (Formicidae) known from Cretaceous fossils primarily found in amber from North America, South America, Europe, and Asia, spanning the late Aptian to Campanian, around 113 to 79 million years ago. The subfamily was first proposed in 2003 but had been subsequently treated as the tribe Haidomyrmecini and placed in the extinct ant subfamily Sphecomyrminae. Reevaluation of the Haidomyrmecini in 2020 led to the elevation of the group back to the subfamily. The family contains nine genera and 13 species. Members of this family are highly distinct from all other ants, having diverse head ornamentation, and unusually shaped, extended mandibles that are articulated vertically rather than horizontally as in modern ants. The jaws in combination with the head ornamentation served to restrain prey, with most species having setae (hair-like structures) covering parts of the head, which likely functioned as triggers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haidomyrmex Zigrasi JZ01 01
''Haidomyrmex'' is an extinct genus of ants in the formicid subfamily Haidomyrmecinae, and is one of nine genera placed in the subfamily Haidomyrmecinae. The genus contains three described species ''Haidomyrmex cerberus'', ''Haidomyrmex scimitarus'', and ''Haidomyrmex zigrasi''. All three are known from single Late Cretaceous fossils which have been found in Asia. ''H. cerberus'' is the type species and ''Haidomyrmex'' the type genus for the subfamily Haidomyrmecinae. History and classification ''Haidomyrmex,'' is known from three solitary adult fossil specimens which are composed of mostly complete adult females which have been preserved as an inclusions in transparent chunk of Burmese amber. The amber specimens entombing ''H. scimitarus'', and ''H. zigrasi'' were recovered from deposits in Kachin State, west of Myitkyna town in Myanmar. In contrast, type specimen of ''H. cerberus'' was collected in the early 1900s from an unspecified location in Myanmar. Burmese amber ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linguamyrmex
''Linguamyrmex'' is an extinct genus of ant in the formicid subfamily Haidomyrmecinae, and is one of only nine genera placed in the subfamily Haidomyrmecinae. The genus contains three described species, ''Linguamyrmex brevicornis'', ''Linguamyrmex rhinocerus'', and the type species ''Linguamyrmex vladi'' all known from Late Cretaceous fossils found in Asia. History and classification ''Linguamyrmex'' is known from a total of four adult fossils. The holotype is specimen number "AMNH BuPH-01" from the American Museum of Natural History; the other three specimens described are also in the same collection, but were not placed as members of ''L. vladi''. The described specimens are of worker caste adults which have been preserved as inclusions in transparent chunks of Burmese amber. The amber specimens were recovered from deposits in Kachin State, in Myanmar. Burmese amber has been radiometrically dated using U- Pb isotopes, yielding an age of approximately 98.79 ± 0.62 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haidomyrmodes
''Haidomyrmodes'' is an extinct genus of ant in the formicid subfamily Haidomyrmecinae, and is one of only nine genera placed in the subfamily Haidomyrmecinae. The genus contains a single described species, ''Haidomyrmodes mammuthus''. ''Haidomyrmodes'' is known from several Middle Cretaceous fossils which have been found in Europe. History and classification ''Haidomyrmodes'' is known from a group of three fossils, the holotype, specimen number "MNHN ARC 50.2", and the paratypes "MNHN ARC 242" and "MNHN AIX 1.2". All three specimens are housed in the fossil collections of the Department of Earth History, Muséum national d'histoire naturelle, Paris, France. The holotype specimen is composed of a mostly complete winged adult female, while the paratypes are both of incomplete worker caste members. All of the specimens are preserved as inclusions in transparent chunks of Late Albian to Early Cenomanian Charentese amber found in the Charente-Maritime area of France. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulcanidris
''Vulcanidris'' is an extinct genus of Brazilian ant in the formicid subfamily Haidomyrmecinae, commonly known as "hell ants". It contains a single species, ''Vulcanidris cratensis''. The genus was first discovered in the Crato Formation of Northeastern Brazil, and it represents the oldest verified ant known to science. Etymology The name ''Vulcanidris'' is in honour of the Vulcano family, which includes Maria Aparecida Vulcano, who has gathered an important Crato collection now bearing her name. The genus also bears the suffix ''-idris'', which is commonly used when naming ant genera and comes from the Greek word ἴδρις (''ídris'') "knowledgeable". The specific name, ''V. cratensis'', is in reference of the geological formation in which the fossil was found. Description The original holotype for the genus, MZSP-CRA-0002, represents a female. It also is the first recorded fossil of a hell ant preserved as a compression fossil in rock, as opposed to amber, allowing for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haidoterminus
''Haidoterminus'' is an extinct genus of ant in the Formicidae subfamily Haidomyrmecinae, and is one of only nine genera placed in this subfamily. The genus contains a single described species ''Haidoterminus cippus'' and is known from one Late Cretaceous fossil which has been found in North America. History and classification ''Haidoterminus'' is known from a solitary adult fossil, the holotype, specimen number "UASM 332546" donated for study by Mark Elaschuk. At the time of description, the specimen was residing in the Strickland Entomology Museum, part of the University of Alberta. The holotype specimen is composed of a mostly complete worker caste adult female which has been preserved as an inclusion in a transparent chunk of clear yellow Canadian amber. The amber specimen was recovered from deposits of the Foremost Formation near Grassy Lake, Alberta, Canada. Canadian amber has been dated to an age of approximately 79–78 million years old, placing it in the Campanian of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratomyrmex
''Ceratomyrmex'' is an extinct genus of ant in the Formicidae subfamily Haidomyrmecinae. The genus contains a single described species ''Ceratomyrmex ellenbergeri'' and is known from several Late Cretaceous fossils which have been found in Asia. History and classification ''Ceratomyrmex'' is known from a total of four adult fossils. The holotype is specimen number "NIGP164022" of the Nanjing Institute of Geology and Paleontology; the adult specimen "IGR.BU-002" of the University of Rennes is designated as paratype. The two additional specimens described but not designated as paratypes were residing in the private collection of Sieghard Ellenberger, Germany. The described specimens are of worker caste adults which have been preserved as inclusions in transparent chunks of Burmese amber. The amber specimens were recovered from deposits in Kachin State, in Myanmar. Burmese amber has been radiometrically dated using U- Pb isotopes, yielding an age of approximately 98.79 ± 0. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crato Formation
The Crato Formation is a geologic formation (stratigraphy), formation of Early Cretaceous (Aptian) age in northeastern Brazil's Araripe Basin. It is an important Lagerstätten, Lagerstätte (undisturbed fossil accumulation) for palaeontology, palaeontologists. The strata were laid down mostly during the Aptian age (geology), age, about 113 million years ago. It thought to have been deposited in a semi-arid Lake, lacustrine wetland environment.Ribeiro et al., 2021 The Crato Formation earns the designation of Lagerstätte due to an exceedingly well preserved and diverse fossil faunal assemblage. Some 25 species of fossil fishes are often found with stomach contents preserved, enabling paleontologists to study predator-prey relationships in this ecosystem. There are also fine examples of pterosaurs, reptiles and amphibians, invertebrates (particularly insects), and plants. Even dinosaurs are represented: a new maniraptor was described in 1996. The unusual taphonomy of the site resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphecomyrminae
Sphecomyrminae is an extinct subfamily of ants in family Formicidae known from a series of Cretaceous fossils found in North America, Europe, and Asia. Sphecomyrminae contains eight genera, divided into two tribes Sphecomyrmini and Zigrasimeciini. The tribe Sphecomyrmini contains the six genera '' Armania'', '' Cretomyrma'', '' Gerontoformica'', '' Orapia'', '' Pseudarmania'' and '' Sphecomyrma''; while Zigrasimeciini contains '' Boltonimecia'' and '' Zigrasimecia''. A number of taxa have been removed from the subfamily and placed either in other subfamilies or are now treated as ''incertae sedis'' in Formicidae. Sphecomyrminae is the most basal of the Formicidae subfamilies, but has not been included in several phylogenetic studies of the family. Symplesiomorphies of the subfamily include the structure of the antenna, which has a short basal segment and a flexible group of segments below the antenna tip. The petiole is low and rounded, with an unrestricted gaster and the presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PBS Eons
PBS Digital Studios is a non-profit organization through which PBS distributes original educational web video content. Based in Arlington, Virginia, it comprises both original series and partnerships with existing YouTube channels. Most of the series are about science, popular culture, art, food, news, and music. History PBS Digital Studios was founded by Jason Seiken in June 2012.Looking Back On A Year Of PBS Digital Studios July 18, 2013. They had their first viral hit with a "remix" of d vocals from '' Mr. Rogers' Nei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
