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Waharoa (whale)
''Waharoa'' is a genus of eomysticetid baleen whale from the Late Oligocene (Chattian) of New Zealand. It was identified with the discovery of ''Waharoa ruwhenua'' by Boessenecker and Fordyce (2015), which added a new genus and species to a monophyletic family Eomysticetidae. Description Boessenecker and Fordyce (2015) characterize the species as follows: "''Waharoa ruwhenua'' shares ''Tohoraata'' and ''Tokarahia'' dorsoventrally shallow and wide occipital condyles, a triangular anterior process and well-developed incisural flange of the periotic; with ''Tohoraata'' and ''Tokarahia'' a concave anterodorsal margin of the anterior process of the periotic and a smooth and transversely convex posterior bullar facet; with ''Tohoraata'' a distinct lateral tubercle on the anterior process; and with ''Eomysticetus'' and ''Micromysticetus'' a short posterior process".Boessenecker RW, Fordyce RE. (2015) Anatomy, feeding ecology, and ontogeny of a transitional baleen whale: a new genus and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Oligocene
The Chattian is, in the geologic timescale, the younger of two ages or upper of two stages of the Oligocene Epoch/ Series. It spans the time between . The Chattian is preceded by the Rupelian and is followed by the Aquitanian (the lowest stage of the Miocene). Stratigraphic definition The Chattian was introduced by Austrian palaeontologist Theodor Fuchs in 1894. Fuchs named the stage after the Chatti, a Germanic tribe.Berry, Edward W"The Mayence Basin, a Chapter of Geologic History" '' The Scientific Monthly'', Vol. 16, No. 2, February 1923. pp. 114. Retrieved March 18, 2020. The original type locality was near the German city of Kassel. The base of the Chattian is at the extinction of the foram genus ''Chiloguembelina'' (which is also the base of foram biozone P21b). An official GSSP for the Chattian Stage was ratified in October of 2016. The top of the Chattian Stage (which is the base of the Aquitanian Stage, Miocene Series and Neogene System) is at the first appeara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horopeta
''Horopeta'' is a genus of baleen whale from the Late Oligocene (Chattian) Kokoamu Greensand of New Zealand. Description ''Horopeta'' can be distinguished from other balaenomorphs in the following characters: base of frontal sloping moderately from skull midline; parietal considerably exposed at sagittal crest; parietal largely exposed at sagittal crest; unfused and short posterior process of periotic and tympanic bulla; prominent superior process of periotic; presence of elliptical foramen and sigmoidal cavity in tympanic bulla; unfused and short posterior processes of periotic and tympanic bulla; a distinct pedicle plate situated in fovea epitubaria; presence of horizontal cleft, elliptical foramen, and sigmoidal cavity in tympanic bulla.Cheng-Hsiu Tsai; R. Ewan Fordyce (2015). "The Earliest Gulp-Feeding Mysticete (Cetacea: Mysticeti) from the Oligocene of New Zealand". Journal of Mammalian Evolution 22 (4): 535–560. doi:10.1007/s10914-015-9290-0. Classification Initial cladi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene Cetaceans
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene Animals Of Oceania
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whakakai
''Whakakai'' is a genus of baleen whale from the Late Oligocene (Chattian) Kokoamu Greensand of New Zealand. Classification Phylogenetic analysis recovers ''Whakakai'' outside crown Mysticeti as the sister taxon of ''Horopeta''.Tsai, C.H., Fordyce R.E., 2016. Archaic baleen whale from the Kokoamu Greensand: earbones distinguish a new late Oligocene mysticete (Cetacea: Mysticeti) from New Zealand. Journal of the Royal Society of New Zealand. doi:10.1080/03036758.2016.1156552 Paleobiology ''Whakakai'' has been recovered in the same deposits that have also yielded the primitive odontocetes '' Awamokoa'', '' Austrosqualodon'', '' Otekaikea'', and ''Waipatia'', the eomysticetids ''Matapanui'', ''Tohoraata'', '' Tokarahia'', and ''Waharoa'', and the balaenomorphs '' Mauicetus'' and ''Horopeta ''Horopeta'' is a genus of baleen whale from the Late Oligocene (Chattian) Kokoamu Greensand of New Zealand. Description ''Horopeta'' can be distinguished from other balaenomorphs in the fol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tokarahia
''Tokarahia'' is a genus of eomysticetid baleen whale from the Late Oligocene (Chattian) of New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 List of islands of New Zealand, smaller islands. It is the .... There are two recognized species, ''T. kauaeroa'' and ''T. lophocephalus''. Description ''Tokarahia'' differs from other eomysticetids in possessing elongate, dorsoventrally tapering zygomatic processes that are medially bowed, with a concave lateral margin, an elongate diamond-shaped posterior bullar facet lacking longitudinal striations, and a transverse crest on the dorsal surface of the periotic, between the posterodorsal angle and the posterior internal acoustic meatus. It is similar to '' Tohoraata raekohao'' in having numerous foramina in the supraorbital process of the frontal, an ovalshaped incisural flange closely ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tohoraata
''Tohoraata'' is a genus of eomysticetid baleen whale from the Late Oligocene (Chattian) of New Zealand. There are two recognized species, ''T. raekohao'' and ''T. waitakiensis''.Robert W. Boessenecker and R. Ewan Fordyce (2014). "A new Eomysticetid (Mammalia: Cetacea) from the Late Oligocene of New Zealand and a re-evaluation of ‘Mauicetus’ waitakiensis". Papers in Palaeontology. in press. doi:10.1002/spp2.1005. Classification ''Tohoraata'' is a member of the family Eomysticetidae, a family of primitive baleen-bearing mysticetes (chaeomysticetes). The type species, ''T. raekohao'', is based on OU 22178, a partial skull associated with a thoracic vertebra and five ribs, collected from the Maerewhenua Member of the Otekaike Limestone. On the other hand, ''T. waitakiensis'', is known from OMC GL 402, a partial skull and five neck vertebrae collected in the Kokoamu Greensand. It was originally described as a species of '' Mauicetus'', but was eventually recognized as more primit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauicetus
''Mauicetus'' is a genus of extinct baleen whale from the Late Oligocene of New Zealand. Taxonomy ''Mauicetus'' was originally named ''Lophocephalus'' by William Benham, but that name was already used for a beetle, and Benham provided the replacement name ''Mauicetus.'' Three more species were named in 1956: ''M. brevicollis'', ''M. lophocephalus'', and ''M. waitakiensis''. Nowadays, ''Mauicetus parki'' is considered a stem-balaenopteroid, while ''M. lophocephalus'' and ''M. waitakiensis'' have been reclassified in Eomysticetidae, with ''M. lophocephalus'' and ''M. waitakiensis'' being assigned to ''Tokarahia'' and ''Tohoraata ''Tohoraata'' is a genus of eomysticetid baleen whale from the Late Oligocene (Chattian) of New Zealand. There are two recognized species, ''T. raekohao'' and ''T. waitakiensis''.Robert W. Boessenecker and R. Ewan Fordyce (2014). "A new Eomystic ...''.Robert W. Boessenecker and R. Ewan Fordyce (2015). "A new genus and species of eomysticetid (Cetacea: M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matapanui
''Matapanui'' is a genus of eomysticetid baleen whale from the Late Oligocene (early Chattian) Kokoamu Greensand of New Zealand. Taxonomy ''Matapanui'' was originally named ''Matapa'', but that name was already in use for a genus of butterfly, necessitating the name change.Robert W. Boessenecker; R. Ewan Fordyce (2016). "Matapanui, a replacement name for Matapa Boessenecker & Fordyce, 2016". Journal of Systematic Palaeontology. Online edition. doi:10.1080/14772019.2016.1210070. Paleobiology Based on the enlarged temporal fossae and enlarged mandibular canal, ''Matapanui'' was probably incapable of lunge-feeding, although it remains unclear whether it could skim-feed or filter prey in the benthic zone. ''Waharoa'' shared its habitat with the odontocetes '' Awamokoa'', '' Austrosqualodon'', '' Otekaikea'', and ''Waipatia'', and the mysticetes '' Horopeta'', '' Mauicetus'', ''Tohoraata'', '' Tokarahia'', ''Waharoa Waharoa is a rural community in the Waikato region of New Zeal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waipatia
''Waipatia'' is an extinct genus of whale from the late Oligocene (Chattian) of New Zealand. Taxonomy The type species, ''Waipatia maerewhenua'' is known from a single skull found near 45° South in Otago Otago (, ; mi, Ōtākou ) is a region of New Zealand located in the southern half of the South Island administered by the Otago Regional Council. It has an area of approximately , making it the country's second largest local government reg ... . The second species, ''W. hectori'', was originally named ''Microcetus hectori'' in 1935, but later recognized as distinct from '' Microcetus''. ''"Uncamentodon"'' was informally coined for ''M. hectori'' in a table by Rothausen in a 1970 paper, but the lack of a diagnosis or description made it a nomen nudum. Finally in 2015, ''M. hectori'' was recognized as a second species of ''Waipatia'' based on preparation of additional material included in the holotype.Y. Tanaka and R. E. Fordyce. 2015. Historically significant late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Species
In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen(s). Article 67.1 A similar concept is used for suprageneric groups and called a type genus. In botanical nomenclature, these terms have no formal standing under the code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen (or, rarely, an illustration) which is also the type of a species name. The species name that has that type can also be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, and some higher-rank names based on genus names, have such types. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otekaikea
''Otekaikea'' is an extinct genus of toothed whale closely related to ''Waipatia''. It is known from the late Oligocene (Chattian) of New Zealand. Description ''Otekaikea'' is a medium-sized odontocete similar to ''Waipatia'' in the following characters: maxilla and occipital partly separated by parietal; flat dorsal surface of periotic; long posterior process of the periotic; and poorly developed ventromedial keel of the bulla. Differences from other archaic odontocetes include: broad dished face; elevated nodular subrhomboidal nasals and elevated frontals; smooth-surfaced premaxillary sac fossae without prominent premaxillary sulci developed posteriorly; premaxillae strongly bifurcated posteriorly, associated with bilateral posterior accessory foramina and elevated crests on the maxillae; periotic with long slender parallel-sided posterior process, and sharp apex of anterior process.Tanaka Y, Fordyce RE (2014) Fossil Dolphin Otekaikea marplesi (Latest Oligocene, New Zealand) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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