The rudist Amphitriscoelus (Bivalvia-Hippuritacea) in the lower Cretaceous of southwestern Mexico

1996 ◽  
Vol 70 (3) ◽  
pp. 399-407 ◽  
Author(s):  
Gloria Alencaster ◽  
Jerjes Pantoja-Alor
Keyword(s):  
New Species ◽  
South America ◽  
Lower Cretaceous ◽  
Volcanic Rocks ◽  
Wide Distribution ◽  
Carbonate Sediments ◽  
Rudist Bivalves ◽  
Northern South America ◽  
A New Species ◽  
Rich Fauna

The emended descriptions of the genus Amphitriscoelus and the species A. waringi Harris and Hodson are given, and a new species is proposed (A. pluriloculata). These rudist bivalves are derived from a thick Lower Cretaceous sequence of carbonate sediments interlayered with siliciclastic, volcaniclastic, and volcanic rocks in southwestern Mexico, near Huetamo, in the State of Michoacan. The species belong to a recently discovered rich fauna containing other rudists, nerineid gastropods, orbitolinid foraminifers, and calcareous algae. The fauna shows a close affinity with the Amphitriscoelus fauna of northern South America. Similar assemblages are also present in Texas, Cuba and other Mexican localities. The wide distribution of the fauna allows interpretation of paleogeographic relations among all the regions as well as interpretation of paleoecological similarities. The existence of an homogeneous large faunistic province during the Early Cretaceous is suggested.

Eleocharis endounifascis: A new species of Eleocharis subgenus Limnochloa (Cyperaceae) from northern South America

Phytotaxa ◽  
2013 ◽  
Vol 7 (1) ◽  
pp. 19-24 ◽  
Author(s):  
C. E. Hinchliff ◽  
S. Petersen ◽  
E. H. Roalson
Keyword(s):  
New Species ◽  
South America ◽  
Standing Water ◽  
Northern South America ◽  
Herbarium Collections ◽  
A New Species

A new species, Eleocharis endounifascis, is described and illustrated. This species inhabits standing water in disturbed, open habitats, occurring among a mosaic of wet forest, and probably also flourishes in sunny, seasonally inundated wetlands from Belize to southeastern Venezuela and Guyana to Brazil. It was previously confused with Eleocharis interstincta in herbarium collections and floristic works.

scholarly journals On some new Acarine parasites of rats

1915 ◽  
Vol 6 (2) ◽  
pp. 183-190 ◽  
Author(s):  
Stanley Hirst
Keyword(s):  
New Species ◽  
South America ◽  
Present Note ◽  
Wide Distribution ◽  
A New Species

Four undescribed mites from rats are dealt with in the present note, one being a new species of Laelaps (Haemolaelaps), which has a wide distribution, occurring in Ceylon, India, Africa and South America; the three others are larval forms of TROMBIDIIDAE, and they are the first parasites of this kind to be collected in India; my best thanks are due to Dr. Nelson Annandale and Mr. F. H. Gravely for their kindness in sending me these interesting Acari. I must also thank Mr. Engel Terzi for his carefully prepared drawings of these species.

First record and a new species of Megarthrus Curtis (Coleoptera, Staphylinidae, Proteininae) from the Colombian Central Andes

Zootaxa ◽  
2011 ◽  
Vol 2916 (1) ◽  
pp. 62
Author(s):  
MARGARITA M. LÓPEZ-GARCÍA ◽  
DIANA M. Méndez-Rojas ◽  
JOSÉ LUÍS NAVARRETE-HEREDIA
Keyword(s):  
New Species ◽  
South America ◽  
Central America ◽  
First Record ◽  
Central Andes ◽  
South American ◽  
The South ◽  
The World ◽  
Northern South America ◽  
A New Species

The genus Megarthrus Curtis 1829 with about 139 species described around the world, is the largest of the subfamily Proteininae (Coleoptera: Staphylinidae) (Cuccodoro 2011). Megarthrus is distributed worldwide (Cuccodoro 1999) but it is apparently more diverse in the Holartic region (Navarrete-Heredia et al. 2002). However, the South American fauna is underestimated because many of the collected specimens are not yet described (Cuccodoro 2011). Newton et al. (2005) cited the genus as probable in Colombia because some species are known from Central America and northern South America, but until now, no species has been published from Colombia. Therefore, M. andinus sp. nov. represents the first record of the genus and subfamily for this country.

A New Species in the Ibatia Species Complex in Matelea s. l. (Apocynaceae: Asclepiadoideae: Asclepiadeae) from Colombia

2009 ◽  
Vol 34 (2) ◽  
pp. 429-433
Author(s):  
Alexander Krings
Keyword(s):  
New Species ◽  
South America ◽  
West Indies ◽  
Species Complex ◽  
The West ◽  
Northern South America ◽  
Floral Characters ◽  
A New Species

A new species of Matelea s.l. (Apocynaceae: Asclepiadoideae, Asclepiadeae, Gonolobinae) is described from coastal Colombia: Matelea dugandii. The species belongs to the Ibatia species complex in Matelea s.l., but exhibits distinct differences in floral characters from previously known taxa, particularly in the terminal style-head appendage. An updated key to members of the complex in northern South America and the West Indies is provided, including M. cumanensis, M. fontana, M. maritima, M. pacifica, and M. rubra.

Piper callejasii (Piperaceae), a New Species from the Eastern Slopes of the Andes, Northern South America

2021 ◽  
Vol 29 ◽  
pp. 200-205
Author(s):  
William Trujillo ◽  
Edwin Trujillo Trujillo ◽  
M. Alejandra Jaramillo
Keyword(s):  
New Species ◽  
South America ◽  
Conservation Status ◽  
Similar Species ◽  
The Andes ◽  
Northern South America ◽  
A New Species

A new species of Piper L. (Piperaceae) from the eastern slopes of the Andes in Colombia and Peru, P. callejasii W. Trujillo & M. A. Jaram., is described and illustrated, and morphological comparisons with similar species are discussed. Piper callejasii is distinguished by its stigmas being sessile, rather than on a long style as in four similar species. Its conservation status is suggested to be Endangered.

A new species of Chironius Fitzinger, 1826 (Squamata: Colubridae) from the Pantepui region, northeastern South America

Zootaxa ◽  
2010 ◽  
Vol 2611 (1) ◽  
pp. 31 ◽  
Author(s):  
PHILIPPE J. R. KOK
Keyword(s):  
New Species ◽  
South America ◽  
Guiana Shield ◽  
Northern South America ◽  
A New Species

A new colubrid snake of the genus Chironius Fitzinger, 1826 is described from the Pantepui region, Guiana Shield, northern South America. The new species, C. challenger sp. nov., is identified as a member of the genus Chironius by its low number of dorsal scale rows (< 12), and it differs markedly from all known congeners by the combination of 10 dorsal scale rows at midbody, absence of apical pits and paravertebral keels in females, more than 149 ventrals, less than 105 divided subcaudals, anal scale single, loreal as high as long or only slightly longer than high, adults and juveniles brownish with lighter crossbands, adults with dark mottling on venter, and 39–41 maxillary teeth. A key to the Chironius species of the Guiana Shield is provided.

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