Evolution of early-middle miocene rodent faunas in relation to long-term palaeoenvironmental changes

Meulen, A.J. van der; Daams, Remmert

doi:10.1016/0031-0182(92)90099-q

Cited by 128 publications

(63 citation statements)

References 5 publications

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“…The second one (between Arroyo del Olivar-Puente de ValArroyo del Olivar-Puente de Val--Puente de ValPuente de Vallecas and Somosaguas) coincided with the middle Miocene Global Cooling Event and reflects more arid conditions. The relative humidity curves given by Meulen and Daams (1992) and Hernández Fernández et al (2006b), based in changes in the structure of rodent faunas, depict aridity peaks that match in time with the climatic change towards more open and arid environments detected in the present study (Fig. 2).…”

Section: Discussionsupporting

confidence: 75%

“…The well-studied mammalian groups from the Iberian Peninsula (Meulen and Daams, 1992;Fraile et al, 2000;Hernández Fernández et al, 2003, 2006aDomingo et al, 2009Domingo et al, , 2012, among the richest of the Neogene (Daams et al, 1977;Alba et al, 2001), represent a good opportunity to analyse ecomorphological aspects of fossil assemblages and their relationship to the climatic change that took place ~ 14 Ma ago. Particularly, the evolution of the body size community structure of the middle Miocene prey fauna from the Madrid Basin allows us to explore the connection between ecological community dynamics and macroenvironmental changes.…”

Section: Introductionmentioning

confidence: 99%

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Palaeoenvironmental analysis of the Aragonian (middle Miocene) mammalian faunas from the Madrid Basin based on body-size structure

Yelo

Cano

Cantalapiedra

et al. 2014

Journal of Iberian Geology

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As a consequence of the growth of the Antarctic ice-sheet during the middle Miocene, a global decrease of temperatures and an associated increase in aridity provoked several environmental changes all around the world. Such environmental variations can be detected in the continental record of the mammalian prey community structure using a synecological approach. Because of the good quality of its faunas, the rich Aragonian vertebrate fossil record from the Madrid Basin (Spain) appears as a good candidate to explore these environmental changes. In order to analyse the climatic evolution of the Iberian Peninsula associated to the Global Cooling Event, two classic palaeosynecological methodologies (cenograms and body size diversity), based on body-size community structure, were applied to 6 fossil sites from the Madrid Basin, ranging over 2 million years (15.5 -13.5 Ma). To establish a comparative framework, we used the ecological faunal data from 100 modern localities uniformly distributed all around the world. Our palaeoenvironmental inference is based on multivariate discriminant analysis of the dataset containing both modern and fossil mammals. Finally, we can conclude that the Aragonian mammalian assemblage from the Madrid Basin showed a predominance of semiarid environments with pulses of higher aridity in biozones Dc, E and F associated with the Global Cooling Event of the middle Miocene.

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Palaeoenvironmental analysis of the Aragonian (middle Miocene) mammalian faunas from the Madrid Basin based on body-size structure

Yelo

Cano

Cantalapiedra

et al. 2014

Journal of Iberian Geology

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“…Since all the insectivores and some rodent families (in our case Sciuridae, Castoridae, Gliridae, Eomyidae) have premolars and others do not (muroid rodents), this results in an over-representation of the former taxa. To avoid this bias some works have considered the number of first and second molars (for example see Van der Meulen, Daams, 1992;Van Dam, 1997). However, and CasanovasVilar (2007) already showed that since in most of the sites the muroid rodents define the bulk of the recovered dental remains this way of counting the specimens will have minimal effects on our calculations.…”

Section: Material Sample Size and Temporal Resolution Of The Analysesmentioning

confidence: 99%

The range and extent of the Vallesian Crisis (Late Miocene): new prospects based on the micromammal record from the Vallès-Penedès basin (Catalonia, Spain)

Casanovas‐Vilar

Ostende

Furió

et al. 2014

Journal of Iberian Geology

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The Vallesian Crisis was initially recognized as a local event, which implied the extinction of certain rodent and artiodactyl genera coinciding with the early/late Vallesian boundary (at 9.7 Ma). Following works increased the range and extent of this event to encompass all Europe and involve a great number of mammal taxa. Here, we analyze the Vallesian rodent and insectivore record of the Vallès-Penedès basin (Catalonia, Spain), where the crisis was first recognized. We show that the quality of the record before the crisis is comparatively much better than afterwards so diversity appears inflated and extinction rates are overrated. Accordingly, we used inferred taxon ranges and rarefaction to calculate new diversity measures independent of sample size. These measures virtually eliminate the Vallesian Crisis, showing that diversity somewhat decreased during the earliest late Vallesian and soon recovered afterwards. This is because it cannot be discarded that several rare taxa, customarily said to have disappeared during the crisis, are in fact present. Amongst the rodents and insectivores, these taxa include genera that are generally rare and show a discontinuous record during the early Vallesian. These are presumed specialists adapted to humid forested environments such as flying squirrels, beavers or certain dormice, most of them being only recorded when the sample size is large enough. Alternatively, these genera may have been associated to very specific habitats which, for an unknown reason, are not sampled during the late Vallesian. Our results cast serious doubts on the very existence of the Vallesian Crisis suggesting that rather than an abrupt event a series of extinctions occurred during a longer time span. It has not been evaluated whether the same pattern is observed in the case of large mammals and in other areas. However, our results show that biases introduced by the quality of the record need to be taken into account when assessing the extent of the event.Keywords: palaeodiversity, micromammals, Late Miocene, Vallès-Penedès basin, Catalonia, Iberian Peninsula Resumen La Crisis Vallesiense fue inicialmente definida como un fenómeno local que implicó la desaparición de ciertos géneros de roedores y artiodáctilos coincidiendo con el límite entre Vallesiense inferior y superior (hace 9.7 Ma). Trabajos posteriores ampliaron el ámbito y alcance de este evento hasta incluir toda Europa e implicar un gran número de taxones de mamíferos. En este trabajo analizamos el registro Vallesiense de roedores e insectívoros de la cuenca del Vallès-Penedès (Cataluña, España), donde la crisis fue reconocida por primera vez. Se muestra que la calidad del registro fósil con anterioridad a la crisis es comparativamente mucho mejor que la de después de modo que se magnifica la diversidad y se exageran las tasas de extinción. Por lo tanto, se ha utilizado rarefacción y se han inferido rangos estratigráficos a fin de calcular nuevas medidas de diversidad independientes del tamaño de la muestra. Estas medidas elimina...

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“…Se han realizado numerosos estudios sobre los roedores del Mioceno, especialmente de las sucesiones faunísticas de la cuenca de Calatayud-Teruel que, además de haber dado a conocer su evolución, lo que ha permitido construir una biozonación muy precisa, también ha dado lugar a un gran conocimiento de las condiciones paleoambientales (temperatura y humedad relativas, y tipo de paisaje) de dicho periodo ya que muchos taxones de roedores son buenos indicadores en tal sentido (Weerd & Daams, 1978;Meulen & Bruijn, 1982;Daams & Meulen, 1984y 1989Daams et al, 1988Daams et al, y 1999bMeulen & Daams, 1992). Este tipo de trabajos se han realizado también en la sucesión faunística de micromamíferos del Mioceno Medio de la Cuenca de Madrid López Martínez et al, 1987;López Martínez et al, 2000 a y b;Luis & Hernando, 2000;Hernández-Ballarín et al, 2011), y utilizando también los macromamíferos Peláez-Campomanes et al, 2000y 2003Soria et al, 2000;Hernández Fernández et al, 2006;Domingo et al, 2008Domingo et al, , 2009Domingo et al, y 2012, lo que permite además contrastar los resultados entre ambas cuencas y con otras áreas geográficas más alejadas.…”

Section: Interpretación Paleoambientalunclassified

“…De amplio registro en el Rambliense y Aragoniense desapareció al final del Vallesiense (López Martínez et al, 1987y 2000aSesé, 2006). El género Armantomys tiene una dentición hipsodonta, característica de un mamífero herbívoro muy especializado en vegetación dura de tipo xerofítico, por lo que se le atribuye un hábi-tat abierto estepario en un clima seco (Weerd & Daams, 1978;Meulen & Bruijn, 1982;Daams & Meulen, 1984y 1989Meulen & Daams, 1992 hábitat de estepa cálida por su frecuente asociación con los géneros Lagopsis y Heteroxerus (como es el caso del yacimiento de Leganés). Muy frecuente y generalmente abundante durante el Rambliense y Aragoniense, se extingue el final de dicho periodo (López Martínez et al, 1987;Sesé, 2006).…”

Section: Interpretación Paleoambientalunclassified

El Aragoniense Medio y Superior en el Suroeste de Madrid: Los nuevos yacimientos de Micromamíferos del Mioceno Medio de Villaviciosa de Odón y Leganés

Sesé¹,

Rodrigo²

2014

Estud. geol.

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RESUMENEn este trabajo se dan a conocer dos nuevos yacimientos de la zona suroeste de Madrid, Villaviciosa de Odón y Leganés, que han proporcionado dos ricas asociaciones de micromamíferos de edades diferentes. La asociación de micromamíferos del yacimiento de Villaviciosa de Odón determinada en este trabajo está compuesta por los siguientes taxones: Lagomorpha: Lagopsis peñai; Erinaceomorpha: Galerix cf. exilis; Soricomorpha: Miosorex cf. grivensis; Rodentia: Atlantoxerus sp., Microdyromys sp., Armantomys tricristatus, Megacricetodon collongensis y Democricetodon sp. Por el estadio evolutivo de Megacricetodon collongensis esta asociación se incluiría en la biozona local E de Daams & Freudenthal (1988a) del final del Aragoniense Medio, correlacionable con el final de la unidad MN 5 de Mein (1975). La asociación del yacimiento de Leganés se compone de los siguientes taxones: Lagomorpha: Lagopsis verus; Erinaceomorpha: Galerix cf. exilis; Rodentia: Heteroxerus cf. rubricati, Armantomys sp., Megacricetodon collongensis-crusafonti y cf. Democricetodon sp. Por el estadio evolutivo de Megacricetodon collongensis-crusafonti se situaría en el Aragoniense Superior en la biozona local G 1 de Daams et al. (1999 a y b) que se correlaciona con la unidad MN 6 de Mein (1975). Es el primer yacimiento que se conoce en Madrid de esta edad. Las asociaciones de micromamíferos de Villaviciosa de Odón y Leganés sugieren un medio fundamentalmente abierto, con predominio de la vegetación dura de tipo estepario, y un clima seco y relativamente cálido.

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Evolution of early-middle miocene rodent faunas in relation to long-term palaeoenvironmental changes

Cited by 128 publications

References 5 publications

Palaeoenvironmental analysis of the Aragonian (middle Miocene) mammalian faunas from the Madrid Basin based on body-size structure

Palaeoenvironmental analysis of the Aragonian (middle Miocene) mammalian faunas from the Madrid Basin based on body-size structure

The range and extent of the Vallesian Crisis (Late Miocene): new prospects based on the micromammal record from the Vallès-Penedès basin (Catalonia, Spain)

El Aragoniense Medio y Superior en el Suroeste de Madrid: Los nuevos yacimientos de Micromamíferos del Mioceno Medio de Villaviciosa de Odón y Leganés

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