Eomyidae (Rodentia: Mammalia) from the Oligocene of Nei Mongol, China

Wang, Banyue; Emry, Robert J.

doi:10.1080/02724634.1991.10011404

Cited by 36 publications

(97 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…None of these ornamentations is similar to that described in the present study. Wang (1987) also noticed that the incisor of E. caducus from the Early Oligocene of Inner Mongolia is similar to E. asiaticus. The specimens observed have two or three longitudinal ridges on the anterior face, but one specimen also shows no longitudinal lines emphasizing that these features may undergo a strong variability, as also noticed by Hugueney (1999).…”

Section: Ornamentation Of Lower Incisorsmentioning

confidence: 91%

“…Previously, few species of Eucricetodon were known in the Oligocene of China (Wang and Qiu, 2000;Wang and Meng 1986;Wang, 1987). The Tieersihabahe localities bear altogether 91 molars, 16 incisors, and two mandibles of Eucricetodon, a population that represents a significant advance in our knowledge of the genus in the Late Oligocene of Asia.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Eucricetodon (Rodentia, Mammalia) from the Late Oligocene of the Junggar basin, northern Xinjiang, China

Maridet¹,

Wu²,

Yang³

et al. 2009

American Museum Novitates

View full text Add to dashboard Cite

New specimens of Eucricetodon are described from the Late Oligocene Tieersihabahe Formation of the Junggar basin, northern Xinjiang, China. The relatively abundant material documents the morphological variation within Asian species of the genus. The taxon, identified as E. aff. E. caducus, is similar to E. caducus from the Oligocene of Kazakhstan and China and E. occasionalis from the Early Miocene of Kazakhstan. It also shows noticeable resemblances to E. longidens from the Late Oligocene of Europe whose origin is currently in debate. The study confirms the strong morphological affinity between Asian and European species of Eucricetodon and suggests that the evolutionary trends among paracricetodontines are probably more complex than previously assumed, especially with the new forms discovered from the last decade. A systematic revision of Eurasian paracricetodontines at species level is needed to understand their evolutionary history.

show abstract

Section: Ornamentation Of Lower Incisorsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Eucricetodon (Rodentia, Mammalia) from the Late Oligocene of the Junggar basin, northern Xinjiang, China

Maridet¹,

Wu²,

Yang³

et al. 2009

American Museum Novitates

View full text Add to dashboard Cite

show abstract

“…P. relictus (Cope 1873); ? Prosciurus ordosicus (Wang 1987); ? Prosciurus pisinnus (Wang and Dashzeveg 2005); cf.…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…Only one species is recorded on that continent by the end of the Miocene or earliest Pliocene (e.g. Shotwell 1958;Kowalski 1974;Wang 1987). In Europe, their record extends from the early Oligocene up to the early Miocene (e.g.…”

Section: Introductionmentioning

confidence: 98%

Early adaptive radiations of Aplodontoidea (Rodentia, Mammalia) on the Holarctic region: systematics, and phylogenetic and paleobiogeographic implications

2012

View full text Add to dashboard Cite

The Aplodontoidea, now restricted to only one North American species (Aplodontia rufa), have shown a wide Holarctic extension since the Upper Eocene. As their fossil record is poor, their phylogenetic relationships and the origins of their successive radiations remain unclear. We perform here phylogenetic analyses, primarily based on dental evidence (94 dental of 97 characters), restricted to Paleogene and early Miocene taxa (46 taxa) in order to avoid biases introduced by substantially derived (divergent) taxa. We confirm the inclusion of some problematic genera such as Cedromus or Douglassciurus within Sciuroidea rather than in Aplodontoidea. Ephemeromys and Lophallomys appear as the most basal members of the Aplodontoidea, and Epeiromys is the closest outgroup of the Sciuroidea-Aplodontoidea clade. The relationships among the ''prosciurines'' remain unclear, with paraphyletic genera such as Prosciurus and Haplomys. Their diagnoses are reevaluated and a new genus is described. The Aplodontidae, including the clade of the latter, and Haplomys liolophus display a dichotomy between Ansomyinae and Aplodontinae, the two crown groups. The first clade formed by the European species argoviensis and descendens (referred to a new genus) can be proposed as a sister group of the species of Ansomys. The second branch of the dichotomy includes the European Plesispermophilus and Sciurodon as basal groups. The species of Parallomys do not form a clade, and the genus appears paraphyletic. The last dichotomy separates the Allomys clade from the 'meniscomyine' clade. Comparisons of the selected species allow consideration of their patterns of dental evolution (e.g. enlargement of P4, development of a metalophprotoloph disto-mesial connection, of crescentic shape in main cusps and ectoloph, of a buccal protruding compressed mesostyle, of a metastylid crest or an anterior spur of the hypoconid, etc.). The split between sciuroids and aplodontoids occurred in North America, and then aplodontoids dispersed rapidly throughout the whole Holarctic region. The first aplodontid adaptive radiation took place either in North America or in Asia. Periodic exchanges occurred between Europe, Asia and North America, and the last radiations (meniscomyines) were restricted in North America.Kurzfassung Die Aplodontoidea waren seit dem OberEozän holarktisch weit verbreitet, sind heute aber auf eine nordamerikanische Art (Aplodontia rufa) beschränkt. Da ihre fossilen Belege spärlich sind, bleiben ihre phylogenetischen Beziehungen sowie die Wurzeln ihrer aufeinander folgenden Radiationen unklar. Wir haben eine phylogenetische Analyse der Aplodontoidea durchgeführt, die in erster Linie auf Zahnmerkmalen basiert (94 von 97 Merkmalen). Die Auswahl der Taxa ist auf das Paläogen und frühe Miozän beschränkt (46 Taxa), um eine

show abstract

“…Among this order, Ctenodactylidae flourished well, Tsaganomyidae appeared and bloomed. Representatives of Aplodontidae also appeared (Wang et al 1981;Wang 1987;Wang and Wang 1991). Bovidae and Cervidae of Artiodactyla emerged in this land mammal age (Huang 1985).…”

Section: Ulantatalianmentioning

confidence: 94%

Major events of Paleogene mammal radiation in China

Wang

Meng

et al. 2007

Geological Journal

View full text Add to dashboard Cite

On the basis of mammalian biostratigraphical study, the Paleogene was subdivided into 11 land mammal ages in China: the Paleocene Shanghuan, Nongshanian and Gashatan; the Eocene Lingchan, Arshantan, Irdinmanhan, Sharamurunian, Naduan and Ulangochuan; and the Oligocene Ulantatalian and Tabenbulukian. Biostratigraphical correlation with North American Land Mammal Ages, plus some palaeomagnetic, isotopic and radiometric results, established the indirect connection with the international time scale. Under this biochronological framework, the compositional change of mammalian faunas and the evolution of major groups are discussed. Three stages are recognized in the Paleogene mammalian radiation: (1) the Paleocene flourishing of archaic groups, (2) the Eocene rising and development of modern major groups and (3) the Oligocene faunal reorganization. During the Paleocene, the mammalian radiation was dominated by the archaic groups and the faunas showed apparent endemism. The radiation was characterized by faunal turnovers due to the flourishing of different families in archaic groups. During this period, ancestral forms of modern glires emerged and the first Rodentiaformes appeared in the late Late Paleocene. Such faunal changes corresponded to the successive rise of temperature after the transition from the Mesozoic to the Cenozoic. The Initial Eocene Thermal Maximum resulted in a significant decrease of the archaic groups and the faunal composition became more similar to that of modern ones. At the beginning of the Eocene, Artiodactyla and Euprimates appeared and Rodentia and Perissodactyla began to differentiate. During the Eocene, Mixodontia, Arctostylopidae, Dinocerata, Pantodonta, Tillodontia and Creodonta disappeared in succession. Perissodactyla became the dominant group in the faunas. The faunal turnovers were characterized by the alteration of dominant families due to the appearance, differentiation and flourishing of families in modern orders. The severe cooling events at the Eocene–Oligocene transition resulted in the development of open grassland, that further contributed to the great mammalian faunal turnover. The perissodactyl‐dominant Eocene faunas were replaced by the rodent/lagomorph‐dominant Oligocene faunas. The appearance and radiation of hypsodont mammal groups characterized the mammalian evolution in the Oligocene. Copyright © 2007 John Wiley & Sons, Ltd.

show abstract

Eomyidae (Rodentia: Mammalia) from the Oligocene of Nei Mongol, China

Cited by 36 publications

References 5 publications

Eucricetodon (Rodentia, Mammalia) from the Late Oligocene of the Junggar basin, northern Xinjiang, China

Eucricetodon (Rodentia, Mammalia) from the Late Oligocene of the Junggar basin, northern Xinjiang, China

Early adaptive radiations of Aplodontoidea (Rodentia, Mammalia) on the Holarctic region: systematics, and phylogenetic and paleobiogeographic implications

Major events of Paleogene mammal radiation in China

Contact Info

Product

Resources

About