SciELO - Scientific Electronic Library Online

 
vol.88 issue4Comparative anatomy of the stem, leaf, and inflorescence basal axis of Manfreda (Asparagaceae: Agavoideae)Population density of Central American tapir (Tapirella bairdii) in cloud forest in Totontepec Villa de Morelos, Oaxaca, Mexico author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • Have no similar articlesSimilars in SciELO

Share


Revista mexicana de biodiversidad

On-line version ISSN 2007-8706Print version ISSN 1870-3453

Abstract

CZAJA, Alexander et al. First record of fossil gastropod Cincinnatia (Hydrobiidae: Nymphophilinae) in Mexico. Rev. Mex. Biodiv. [online]. 2017, vol.88, n.4, pp.912-917. ISSN 2007-8706.  http://dx.doi.org/10.1016/j.rmb.2017.10.025.

The first record of fossil shells of the freshwater gastropod genus Cincinnatia Pilsbry, 1891 found in fluvial sediments of the late Pleistocene in the Acatita Valley, Coahuila, Mexico, is described. Morphology and discriminant analysis indicate that the fossil material correspond to Cincinnatia integra (Say, 1821), an extant species with a disjunct distribution between the eastern part of United States of America and southern Canada and a small area near Pánuco River, San Luis Potosí, Mexico. The new findings mark the westernmost limit of the original distribution of Cincinnatia and suggest a north-south connection between both areas in the original extension of C. integra, today separated according to the records by more than 700 km, since the late Pleistocene to sub-recent times. Considering that northern Mexico to date is under-sampled for the Hydrobiidae, there is a high probability of finding live populations of Cincinnatia in this region and in other aquatic habitats in the northern part of the states of Coahuila, Nuevo León, and Tamaulipas.

Keywords : Mollusca; Northern Mexico; Eastern United States of America.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )