The Early Miocene muroids (Muroidea, Rodentia) of the Ribesalbes-Alcora Basin (Spain)

Crespo, Vicente D.; Ríos, María; Marquina-Blasco, Rafael; Montoya, Plini

http://hdl.handle.net/10362/186639

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Autores

Crespo, Vicente D.

Ríos, María

Marquina-Blasco, Rafael

Montoya, Plini

Resumo(s)

The Campisano Ravine in the Ribesalbes-Alcora Basin (Spain, Early Miocene, Biozone C, MN 4) yielded a diverse and abundant assemblage of muroids, comprising five distinct taxa, and nearly 700 remains. The assemblage yielded five muroid taxa: Megacricetodon primitivus, Democricetodon decipiens, Eumyarion weinfurteri, Melissiodon sp., and Muroidea indet. The most abundant taxa were M. primitivus and D. decipiens, with M. primitivus being the most prevalent in the oldest sites and D. decipiens in the most recent ones. E. weinfurteri was exclusively identified in the FS1, MAB3, and MAB5 sites of the most recent biozone (L. ellipticus, see Crespo et al. 2021). In contrast, Melissiodon sp. was confined to the BC-1 and MAB-3 sites. M. primitivus was present in all Iberian basins, whereas D. decipiens exhibited considerable variability, being recorded in the Ca biozone of the Calatayud-Montalbán Basin, the last part of the C biozone of the Vallès-Penedès Basin, and the Buñol site. It can be hypothesised that the studied basin may be a factor in the distribution of this species across the regions in question. Eumyarion was present in the Vallès-Penedès Basin from the first part of the C biozone, subsequently migrating to the studied basin and appearing in the Cb biozone in the Calatayud-Montalbán and Buñol basins. Melissiodon was absent from the latter basin from the MN3 biozone to the last part of the C biozone and from the MN5 biozone in the Vallès-Penedès Basin. The presence of muroid faunas in the Early Miocene suggests that the coastal Ribesalbes-Alcora Basin functioned as a transitional region between the forested areas of west and central Europe and the drier inner Iberian Peninsula basins.

Descrição

The survey and excavation campaigns in Araia d\u2019Alcora were funded by the Conselleria de Cultura i Esports of the Generalitat Valenciana from 2008 to 2011, by projects 2008/0433-CS, 2010/0528-CS, 2011/0230-CS, GV06/304, and GVPRE/2008/320. This research was also supported by the Spanish Ministerio de Ciencia, Innovaci\u00F3n y Universidades PID2023-151089NB-I00 (MCIU / AEI / 10.13039/501100011033 / FEDER, UE). Thanks are also due to the helpful comments of Dr. L\u00F3pez-Guerrero and anonymous reviewers, which improved the original manuscript, and Jarrid Muhlenberg for the English revision of the manuscript. V.D.C. thanks the Stimulus of Scientific Employment, Individual Support \u2013 2021 Call grant by the Funda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia (Portugal, CEECIND/03080/2021; DOI: 10.54499/2021.03080. RMB thanks the CIAPOS postdoctoral grant (CIAPOS/2023/160, Generalitat Valenciana), co-financed by the European Social Fund. Publisher Copyright: Copyright Vicente D. Crespo et al.