A systematic review of cetothere baleen whales (Cetacea, Cetotheriidae) from the Late Miocene of Crimea and Caucasus, with a new genus

2016 ◽  
Vol 3 (1) ◽  
pp. 49-68 ◽  
Author(s):  
Pavel Gol'din ◽  
Dmitry Startsev
Keyword(s):  
Systematic Review ◽  
Late Miocene ◽  
New Genus ◽  
Baleen Whales

scholarly journals A new genus and species of eomysticetid (Cetacea: Mysticeti) and a reinterpretation of ‘Mauicetus’ lophocephalus Marples, 1956: transitional baleen whales from the upper Oligocene of New Zealand

2018 ◽  
Author(s):  
Robert Boessenecker ◽  
R. Ewan Fordyce
Keyword(s):  
Phylogenetic Analysis ◽  
New Zealand ◽  
Temporomandibular Joint ◽  
New Genus ◽  
Feeding Strategy ◽  
Thoracic Vertebrae ◽  
New Genus And Species ◽  
Baleen Whales ◽  
Upper Oligocene ◽  
Lunge Feeding

The early evolution of toothless baleen whales (Chaeomysticeti) remains elusive despite a robust record of Eocene-Oligocene archaeocetes and toothed mysticetes. Eomysticetids, a group of archaic longirostrine and putatively toothless baleen whales fill in a crucial morphological gap between well-known toothed mysticetes and more crownward Neogene Mysticeti. A historically important but perplexing cetacean is “Mauicetus” lophocephalus (upper Oligocene South Island, New Zealand). The discovery of new skulls and skeletons of eomysticetids from the Oligocene Kokoamu Greensand and Otekaike Limestone permit a redescription and modern reinterpretation of “Mauicetus” lophocephalus, and indicating that this species may have retained adult teeth. A new genus and species, Tokarahia kauaeroa, is erected on the basis of a well-preserved subadult to adult skull with mandibles, tympanoperiotics, and cervical and thoracic vertebrae, ribs, sternum, and forelimbs from the Otekaike Limestone (>25.2 Ma). “Mauicetus” lophocephalus is relatively similar and recombined as Tokarahia lophocephalus. Phylogenetic analysis supports inclusion of Tokarahia within the Eomysticetidae alongside Eomysticetus, Micromysticetus, Yamatocetus, and Tohoraata, and strongly supports monophyly of Eomysticetidae. Tokarahia lacked extreme rostral kinesis of extant Mysticeti and primitively retained a delicate archaeocete-like posterior mandible and synovial temporomandibular joint, suggesting that Tokarahia was capable of at most, limited lunge feeding in contrast to extant Balaenopteridae, and utilized an alternative as-yet unspecified feeding strategy.

A new genus and species of Sieblosiidae from the Middle Miocene of Germany (Odonata: Epiproctophora)

Zootaxa ◽  
2012 ◽  
Vol 3582 (1) ◽  
pp. 64
Author(s):  
ANDRÉ NEL ◽  
GUNTHER FLECK
Keyword(s):  
Late Miocene ◽  
Middle Miocene ◽  
New Genus ◽  
New Genus And Species ◽  
The Third

Germanostenolestes lutzi, new genus and species of Sieblosiidae is described from the Middle Miocene of Öhningen (Germany). It probably belongs to the clade (Paraoligolestes + (Parastenolestes (Germanolestes + Stenolestes))) sensu Nel et al. (2005). It is the third representative of the Sieblosiidae described from this outcrop, showing that this family was still quite diverse in the Middle-Late Miocene.

Fossil Frogs of the Late Clarendonian (Late Miocene) Pratt Slide Local Fauna of Nebraska, with the Description of a New Genus

2015 ◽  
Vol 49 (1) ◽  
pp. 143-149 ◽  
Author(s):  
Dennis Parmley ◽  
Robert Chandler ◽  
Linda Chandler
Keyword(s):  
Late Miocene ◽  
New Genus ◽  
Local Fauna

scholarly journals A new raninoid crab (Decapoda, Brachyura, Raninidae) from the early Oligocene (late Rupelian) of Italy

2017 ◽  
Vol 4 (1) ◽  
pp. 87 ◽  
Author(s):  
Giovanni Pasini ◽  
Alessandro Garassino
Keyword(s):  
Systematic Review ◽  
New Genus ◽  
Early Eocene ◽  
Original Sample ◽  
Fossil Species ◽  
Early Oligocene

Pasini &amp; Garassino (2017) did a preliminary systematic review of the worldwide fossil species of <em>Ranina</em>, pointing out that it was used as “basket genus” for almost two centuries to accommodate different questionable taxa pertaining or not to Raninoidea. The result was that just four species were possibly assigned to <em>Ranina</em> compared to 23 species previously listed by Karasawa <em>et al</em>. (2014). Among the studied species, a rich sample of specimens from the early Oligocene of the Ligure-Piemontese Basin (Italy), previously assigned to Ranina speciosa by Ristori (1889) and Allasinaz (1987), has been revised and here discussed. The studied specimens are herein assigned to the new genus Alcespina, with <em>A. ovadaensis</em> n. sp (Raninidae), whereas five specimens of Allasinaz’s original sample are assigned to <em>Raninoides</em> H. Milne Edwards, 1837. Finally, this study allows us to review the questionable species <em>Ranina berglundi</em> Squires &amp; Demetrion, 1992, from the early Eocene of Mexico, herein also assigned to <em>A. berglund</em>i (Squires &amp; Demetrion, 1992) n. comb.

scholarly journals A new enigmatic Late Miocene mylodontoid sloth from northern South America

2015 ◽  
Vol 2 (2) ◽  
pp. 140256 ◽  
Author(s):  
Ascanio D. Rincón ◽  
H. Gregory McDonald ◽  
Andrés Solórzano ◽  
Mónica Núñez Flores ◽  
Damián Ruiz-Ramoni
Keyword(s):  
South America ◽  
Late Miocene ◽  
Preliminary Analysis ◽  
New Genus ◽  
New Taxon ◽  
New Genus And Species ◽  
Consensus Tree ◽  
Discriminate Analysis ◽  
Northern South America ◽  
Phylogenetic Affinities

A new genus and species of sloth ( Eionaletherium tanycnemius gen. et sp. nov.) recently collected from the Late Miocene Urumaco Formation, Venezuela (northern South America) is herein described based on a partial skeleton including associated femora and tibiae. In order to make a preliminary analysis of the phylogenetic affinities of this new sloth we performed a discriminate analysis based on several characters of the femur and tibia of selected Mylodontoidea and Megatherioidea sloths. The consensus tree produced indicates that the new sloth, E. tanycnemius , is a member of the Mylodontoidea. Surprisingly, the new taxon shows some enigmatic features among Neogene mylodontoid sloths, e.g. femur with a robust lesser trochanter that projects medially and the straight distinctly elongated tibia. The discovery of E. tanycnemius increases the diversity of sloths present in the Urumaco sequence to ten taxa. This taxon supports previous studies of the sloth assemblage from the Urumaco sequence as it further indicates that there are several sloth lineages present that are unknown from the better sampled areas of southern South America.

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