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A New Species of Mayfly, Maccaffertium annae sp. nov. (Ephemeroptera: Heptageniidae) from Mexican Amber (Miocene)
Craig R. Macadam Andrew J. Ross

Abstract: Maccaffertium annae sp. n. is described in the Mexican amber of early Miocene age. It constitutes the first species of mayfly (Ephemeroptera), the first record of the family Heptageniidae to be described from this amber, and also the first fossil record of th

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Ophthalmoplax (Decapoda: Brachyura: Portunoidea) from the late Campanian, Upper Cretaceous, of Colombia

Abstract: A new species of the brachyuran Ophthalmoplax is documented based upon two specimens collected from shales of the Lodolitas de Aguacaliente Formation, Guadalupe Group, (Cordillera Oriental, Colombian Andes), which represents a regional transgressive event. Th

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Late Paleocene Cancellariidae (Gastropoda: Neogastropoda) from Baja California, Mexico

Abstract: Four gastropod species including two new ones, belonging to the family Cancellariidae, of the genus Cancellaria, are described and illustrated for the late Paleocene Sepultura Formation in Baja California, northwestern Mexico. The new species Cancellaria baja

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Geology of the Selene perlite deposit in the northern Sierra Madre Occidental, northeastern Sonora, Mexico

Abstract: The Selene perlite ore deposit of northeastern Sonora, Mexico, lies at the southern edge of an extensive (85 × 35 km) assemblage of Early Oligocene–Miocene volcanic rocks. This fault-bounded and east-tilted volcanic assemblage is of variable composition and w

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Quaternary alluvial fans of Ciudad Juárez, Chihuahua, northern México: OSL ages and implications for climatic history of the region

Abstract: Alluvial fans formed from sediments derived from erosion of the Juárez Mountains in northernmost México have a significant flood impact on the Ciudad Juárez, which is built on the fan system. The northern part of Ciudad Juárez is the most active; further sout

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Calisiopsis azteca n.sp., the first Aradidae from mid Miocene Mexican Amber (Hemiptera: Heteroptera)
Ernst Heiss

Abstract: Only a few Heteroptera have been described so far from Mexican amber. Calisiopsis azteca n.sp. is the first fossil representative of the family Aradidae, which is described and illustrated. It resembles Calisiopsis brodzinskyorum Froeschner, 1992 from Do

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The Dolichopodidae (Diptera) of Mexican amber

Abstract: The family Dolichopodidae (Diptera) from Mexican Chiapas amber are reviewed. Six new species are described: Mesorhaga pseudolacrymans , Amblypsilopus monicae , Medetera totolapa , Medetera amissa , Peloropeodes paleomexicana and N

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Alumeda solorzanokraemerae sp. nov. from the Miocene Mexican Amber (Hemiptera: Heteroptera, Reduviidae, Emesinae)
Yuri A. Popov

Abstract: A new fossil emesine reduviid from the Middle Miocene Mexican amber from the Simojovel– Alumeda solorzanokraemerae sp. nov. – is described and illustrated. This is the second record of Reduviidae: Emesinae in Mexican amber and the fifth from the New World

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