https://www.socictopen.socict.org/index.php/items/show/27414
title: Informe sobre reptiles colombianos. III: investigaciones sobre la anatomía craneal; distribución geográfica y ecología de Crocodylus Intermedius (Graves) en Colombia Informe sobre reptiles colombianos. III: investigaciones sobre la anatomía craneal; distribución geográfica y ecología de Crocodylus Intermedius (Graves) en Colombia
subject: Anatomía craneal, Crocodylus Intermedius (Graves), Distribución geográfica, Reptiles colombianos, ecología
description: 1. The present paper includes studies about the Cranial Anatomy, Geographical Distribution and Ecology of Crocodylus intermedius in Colombia. 2. The material has been collected from the areas of the rivers Guaviare, Ariari, Güéjar and Cunimía. It consists of sixteen skulls and fifty-four fetus-containing eggs. 3. A detailed description of the skulls is given, the lengths of which range between 25.4 cm. and 70.7 cm. 4. Concerning the scalation: there is a single row of occipitals containing between 2 and 6 individual scutes: two rows of cervicals, the first containing 4 and the second 2 scales. The dorsals are in 16-17 transverse rows, the broadest of which contains 5-6 individual scales. The ventrals are in 25 to 27½ transverse, rows, the broadest of which contains between 14 and 18 individual scales. The tail has between 17 and 19 double-crested, and 17 to 19 single-crested segments. The scalation of 4 fetus does not show any special characteristics. 5. The coloration of Cr. intermedius varies between light-grey in juveniles and greyish green, light brown to yellowish in adults. The greenish color is due to the extensive growth of algae on the dorsal side. There are dark marks and spots on the entire dorsal and lateral sides as well as on the ventral side of the tail. The throat and belly are white and without marks. The colour of living specimens on sand banks, in bright sun appears almost white. 6. Cr. intermedius ranges, in Colombia, between the Rio Arauca in the east and the lower course of the Río Duda in the west. No intermedius are to be found in the rivers Vaupés. Caquetá and Putumayo (tributaries of the Amazon). In Venezuela he ranges as far as San Fernando de Atabapo in the upper Orinoco area. For unexplainable reasons he does not enter the Amazon, by the comunicatron of the Orinoco-Casiquiare-Río Negro. 7. Numerous ecological observations were made on habitat, size, alimentation, parasites, reproduction and behavior. The 'record' in size is apparently sh…
creator: Medem Fred
source: Caldasia
publisher: Universidad Nacional de Colombia
date: 1958
relation: http://www.revistas.unal.edu.co/index.php/cal/article/view/33019
coverage: Science, Botany, Zoology