New species and records of phreatic snails (Caenogastropoda:Cochliopidae) from the Holocene of Coahuila, Mexico

IF 0.5 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Archiv fur Molluskenkunde Pub Date : 2017-12-20 DOI:10.1127/ARCH.MOLL/146/227-232

A. Czaja, J. L. ESTRADA-RODRÍGUEZ, Ulises Romero-Méndez, Verónica Ávila-Rodríguez, Iris Gabriela Meza-Sánchez, A. Covich

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引用次数: 7

Abstract

This paper describes 2 new species of phreatic gastropods from the Holocene deposits of Parras and Viesca, Coahuila, northern Mexico. Both new fossil species belong to genera that today are known living only from the Cuatro Ciénegas basin, Coahuila, Mexico, one of the hotspots of extant freshwater gastropod diversity on the North American continent, frequently called the “Mexican Galapagos”. Paludiscala thompsoni n. sp. was found in spring-deposited sediments at the outlet of caves near Viesca, Coahuila, and is the first record of fossil shells of this genus. Our second new species, Coahuilix parrasense n. sp., was collected in sediments of a dry channel near the town El Molino, Parras de la Fuente, Coahuila, and its shell morphology has affinities with that of extant endemic cave snails from Cuatro Ciénegas. Additionally, we present a new record from Parras de la Fuente of Phreatoceras taylori (Hershler & Longley, 1987), previously known only from 2 sites in south-central Texas and Cuatro Ciénegas.

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墨西哥科阿韦拉全新世潜水蜗牛新种及记录(螺足纲:蜗螺科)

本文报道了墨西哥北部科阿韦拉州Parras和Viesca全新世沉积物中的2个潜水腹足类新种。这两种新的化石物种都属于目前已知仅生活在墨西哥科阿韦拉的Cuatro ci内加斯盆地的属，该盆地是北美大陆现存淡水腹足动物多样性的热点之一，通常被称为“墨西哥加拉帕戈斯群岛”。Paludiscala thompsoni n. sp.是在科阿韦拉省维斯卡附近洞穴出口处的春季沉积物中发现的，是该属化石壳的第一个记录。我们的第二个新种Coahuilix parrasense n. sp是在Coahuila Parras de la Fuente镇El Molino附近的干水道沉积物中收集到的，它的壳形态与Cuatro ci内加斯现存的特有洞穴蜗牛相似。此外，我们提出了Parras de la Fuente of Phreatoceras taylori的新记录(Hershler & Longley, 1987)，以前只在德克萨斯州中南部和Cuatro cisamnegas的2个地点发现。

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来源期刊

Archiv fur Molluskenkunde MARINE & FRESHWATER BIOLOGY-

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： Archiv für Molluskenkunde (ISSN 1869-0963, e-ISSN 2367-0622); Up to and including Vol. 138/2 papers were published under the ISSN 0003-9284. rchiv für Molluskenkunde is an international, peer-reviewed journal on all aspects of molluscan biodiversity. It preferably publishes original research papers of high quality on systematics, taxonomy, phylogeny and morphology of all groups of molluscs, both recent and fossil from the Cenozoic. Contributions of broad international interest on other aspects of malacology such as ecology and biogeography are welcome as well. Papers on physiology, parasitology, regional faunistics or those on non-Cenozoic fossils or pure biostratigraphy should be submitted elsewhere.