A new otter of giant size,<i>Siamogale melilutra</i>sp. nov. (Lutrinae: Mustelidae: Carnivora), from the latest Miocene Shuitangba site in north-eastern Yunnan, south-western China, and a total-evidence phylogeny of lutrines

Wang, Xiaoming; Grohé, Camille; Su, Denise F.; White, Stuart C.; Ji, Xueping; Kelley, Jay; Jablonski, Nina G.; Deng, Tao; You, Youshan; Yang, Xin

doi:10.1080/14772019.2016.1267666

Cited by 23 publications

(39 citation statements)

References 54 publications

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“…GEOGRAPHICAL AND STRATIGRAPHICAL DISTRIBUTION: Q-K and J lignite zones, late middle Miocene of Mae Moh Basin, Thailand (13.4-13.2 Ma and 12.8-12.2 Ma, respectively;Ginsburg et al, 1983;Grohe et al, 2010; this study); Shuitangba fossil site, latest Miocene of Zhaotong Basin, Yunnan Province, China (~6.2 Ma;Wang et al, 2018); Dapinggou, Pliocene Gaozhuang Formation of Yushe Basin, Shanxi Province, China (~4,9-5.4 Ma; Teilhard de Chardin and Léroy, 1945;Wang et al, 2018).…”

Section: Paleobiogeographymentioning

confidence: 58%

“…Moreover, the reduction in P4 length with an extension of the lingual shelf beyond the metastyle blade is different from the condition observed in the extant badgers Meles and Arctonyx. The shape of the P4 protocone of S. bounosa is also crestiform, as opposed to cusped in Meles and reduced to a bulge in Arctonyx, Finally, increasing morphological evidence of a relationship between Siamogale and other fossil lutrines support its belonging to this subfamily (Wang et al, 2018). Vishnuonyx Pilgrim, 1932 Type specizs: Vishnuonyx chinjiensis Pilgrim, 1932. INCLUDED SPECIES: Vishnuonyx chinjiensis Pilgrim, 1932, V. angololensis Werdelin, 2003, V. maemohensis, n. sp.…”

Section: Erymoocy: Frommentioning

confidence: 95%

“…This taxonomic determination is consistent with the more recent age of MM-54 (J lignite zone, dated to 12.8-12,2 Ma) by comparison with the specimens of the type species S. thailandica (Q-K zones, dated to 13.4-13.2 Ma) discovered in the Mae Moh Basin. S, bounosa is a derived chronospecies of S. thailandica, In addition, S, bounosa differs from the more derived Chinese S. melilutra (Wang et al, 2018) in its smaller dimensions (tables 1-2), a narrower braincase where the mastoid processes do not extend to the level of the zygomatic arches, absence of a sagittal crest, a morecusped protocone and the presence of an hypoconal crest on P4, a P4 protocone that is more mesially located, a buccal border of P4 that is convex rather than concave, equally developed buccal shelves. of paracone and metacone on M1 rather than a more-developed paracone buccal shelf, and a paraconule running closer to the mesial border of M1.…”

Section: Erymoocy: Frommentioning

confidence: 97%

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The Late Middle Miocene Mae Moh Basin of Northern Thailand: The Richest Neogene Assemblage of Carnivora from Southeast Asia and a Paleobiogeographic Analysis of Miocene Asian Carnivorans

Grohé

Bonis

Chaimanee

et al. 2020

American Museum Novitates

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The late middle Miocene fossil-bearing lignite zones of the Mae Moh Basin, northern Thailand, have yielded a rich vertebrate fauna, including two species of Carnivora described thus far: the bunodont otter Siamogale thailandica (known from over a 100 specimens) and the large amphicyonid Maemohcyon potisati. Here we describe additional carnivoran material from Mae Moh comprising new remains of Maemohcyon potisati as well as remains of seven new carnivorans belonging to at least four families: a new species of Siamogale (S. bounosa), a new species of another otter (Vishnuonyx maemohensis), one representative of the genus Pseudarctos (a small amphicyonid), a new genus of Asian palm civet, Siamictis, one representative of another civet (cf. Viverra sp.), a new species of mongoose (Leptoplesictis peignei) and a Feliformia indet. This carnivoran assemblage constitutes one of the richest for the middle Miocene of eastern Asia and by far the richest for the Neogene of Southeast Asia.

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Section: Paleobiogeographymentioning

confidence: 58%

Section: Erymoocy: Frommentioning

confidence: 95%

Section: Erymoocy: Frommentioning

confidence: 97%

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The Late Middle Miocene Mae Moh Basin of Northern Thailand: The Richest Neogene Assemblage of Carnivora from Southeast Asia and a Paleobiogeographic Analysis of Miocene Asian Carnivorans

Grohé

Bonis

Chaimanee

et al. 2020

American Museum Novitates

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“…In the most recent combined phylogeny of otters, the extant sea otter Enhydra lutris and its sister taxon Enhydriodon spp. are embedded within the river otter (Lutrinae) clade (Wang et al, 2018). Although this same phylogenetic analysis placed Enhydritherium with other lutrine otters and distant from the sea otter we included it in our study since recent fossil evidence suggested that Enhydritherium occupied freshwater environments in addition to estuarine and coastal environments (Tseng et al, 2017).…”

Section: Diversity Through Timementioning

confidence: 97%

Feeding in marine mammals: An integration of evolution and ecology through time

Berta

Lanzetti

2020

Palaeontol Electron

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Marine mammals are key components of aquatic ecosystems. Feeding strategies identified in extant cetaceans, pinnipeds, sirenians, marine otters, and polar bears are associated with anatomical specializations of the head (rostrum, palate, temporomandibular joint, teeth/baleen, mandible). Genetic and ontogenetic evidence of skull and tooth morphology provide the mechanisms that underlie patterns of feeding diversity. Based on a comprehensive diversity data set derived from the Paleobiology Database, we considered feeding strategies (suction, biting, filter feeding, grazing), prey type (squid, fish, benthic invertebrates, zooplankton, tetrapods, sea grasses), tooth pattern and cusp shape (homodont, heterodont, pointed, rounded, edentulous), and habitat (marine, riverine, estuarine) in fossil and extant marine mammals. These variables were then tested for correlation and their changes through time examined in relation to productivity and climate variables. We provide an integrated analysis of the evolution of feeding and trophic structure in marine mammals and explore the origin and timing of particular feeding strategies over the last 50 million years. In agreement with earlier reports, updated generic counts reveal that the greatest diversity of pinnipedimorphs and cetaceans occurred during the late Miocene (Tortonian), following the Mid-Miocene Climatic Optimum. These historical data are used as a framework to inform past and present structure and trophic interactions and enable predictions about future marine ecosystems.The drivers of diet and feeding patterns are both environmental (sea level fluctuations, climate change) and biotic (anatomical specializations, competition, predator-prey). The influence of these processes on paleodiversity varies depending on taxonomic group, timing, and geographic scale.

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“…Although ocean-going otters had to have evolved from freshwater ancestors [2], the fossil record of the North American sea otters is poor, and the evolutionary origin of extant sea otters remains uncertain [3]. Recent phylogenetic analyses of morphological and genetic sequence data suggest that Enhydra is most closely related to Asian fossil otters, whereas earlier palaeontological analyses indicate a close relationship between Enhydra and the fossil otter Enhydritherium terraenovae [4]. The hypothesis of a North American fossil otter population related to Enhydritherium giving rise to the present day sea otter Enhydra is appealing because the majority (eight out of nine) of the fossil localities containing Enhydritherium specimens also have marine vertebrates associated with them [5] (electronic supplementary material, table S1).…”

Section: Introductionmentioning

confidence: 99%

Discovery of the fossil otter Enhydritherium terraenovae (Carnivora, Mammalia) in Mexico reconciles a palaeozoogeographic mystery

et al. 2017

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The North American fossil otter is thought to be partially convergent in ecological niche with the living sea otter, both having low-crowned crushing teeth and a close association with marine environments. Fossil records of are found in mostly marginal marine deposits in California and Florida; despite presence of very rich records of fossil terrestrial mammals in contemporaneous localities inland, no fossils are hitherto known in interior North America. Here we report the first occurrence of outside of Florida and California, in a land-locked terrestrial mammal fauna of the upper Miocene deposits of Juchipila Basin, Zacatecas State, Mexico. This new occurrence of is at least 200 km from the modern Pacific coastline, and nearly 600 km from the Gulf of Mexico. Besides providing further evidence that was not dependent on coastal marine environments as originally interpreted, this discovery leads us to propose a new east-to-west dispersal route between the Florida and California populations through central Mexico. The proximity of the fossil locality to nearby populations of modern neotropical otters suggests that trans-Mexican freshwater corridors for vertebrate species in riparian habitats may have persisted for a prolonged period of time, pre-dating the Great American Biotic Interchange.

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A new otter of giant size,Siamogale melilutrasp. nov. (Lutrinae: Mustelidae: Carnivora), from the latest Miocene Shuitangba site in north-eastern Yunnan, south-western China, and a total-evidence phylogeny of lutrines

Cited by 23 publications

References 54 publications

The Late Middle Miocene Mae Moh Basin of Northern Thailand: The Richest Neogene Assemblage of Carnivora from Southeast Asia and a Paleobiogeographic Analysis of Miocene Asian Carnivorans

The Late Middle Miocene Mae Moh Basin of Northern Thailand: The Richest Neogene Assemblage of Carnivora from Southeast Asia and a Paleobiogeographic Analysis of Miocene Asian Carnivorans

Feeding in marine mammals: An integration of evolution and ecology through time

Discovery of the fossil otter Enhydritherium terraenovae (Carnivora, Mammalia) in Mexico reconciles a palaeozoogeographic mystery

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