Tag Archives: Coahuila

Cyprinodon latifasciatus Garman

Parras Pupfish (Cyprinodon latifasciatus)

The Parras Pupfish was described in 1881, it was restricted to a spring or rather a series of springs in the valley that connects with Laguna de Mayrán near the city of San Pedro in Coahuila, Mexico.

Though some of these springs still exist, they do not harbour their former inhabitants any longer, but instead are filled with intentionally introduced Mosquitofish (Gambusia affinis (Baird & Girard)), Guppys (Poecilia reticulata Peters), and Swordtails (Xiphophorus helleri Heckel).

The Parras Pupfish was last seen in the 1930s and is now extinct.



[1] M. L. Lozano-Vilano; M. De La Maza-Beningnos: Diversity and status of Mexican killifishes. Journal of Fish Biology 90(1): 1-36. 2016


edited: 27.05.2019

Proboscidea spicata Correll

Many-flowered Unicorn-Plant (Proboscidea spicata)

The Many-flowered Unicorn-Plant, described in 1968, is known from widely separated populations in Mexico as well as in Texas, USA, where it is known to have occurred at dry, sandy terraces along the Rio Grande as well as in other disturbed sandy habitats.

The species can be distinguished from other, closely related species by its spicate inflorescences with numerous small flowers.

The Many-flowered Unicorn-Plant was last recorded in 1967, it was never found again subsequently and is possibly extinct now.


Photo: Harvard University Herbaria: Vascular Plants of North America (Harvard)



edited: 24.08.2022

Amphinaias couchiana (Lea)

Rio Grande Monkeyface (Amphinaias couchiana)  

The Rio Grande Monkeyface is known, on the one hand, from subfossil remains from the Pecos River drainage in New Mexico, USA, but on the other hand also from live specimens from the Rio Grande in Texas, USA as well as from the Río Conchos in Chihuahua and from the Río Salado in Tamaulipas (both in Mexico).  

The last living specimes of this species have been collected in the year 1898 near Bracketville in the Kinney County in Texas.  


The Rio Grande Monkeyface is very possibly extinct, there exists, however, a vaguely possibility, that a population may still survive at least somewhere in Mexico.


edited: 13.12.2012