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| Schweitzer, Carrie E.; Feldmann, Rodney M.. |
| New fossils referable to the Cancridae Latreille, 1802 extend the known stratigraphic range of the family into the middle Eocene and the geographic range into South America. Each genus within the family has been reevaluated within the context of the new material. A suite of diagnostic characters for each cancrid genus makes it possible to assign both extant and fossil specimens to genera and the two cancrid subfamilies, the Cancrinae Latreille, 1802, and Lobocarcininae Beurlen, 1930, based solely upon dorsal carapace morphology. Cheliped morphology is useful in assigning genera to the family but is significantly less useful at the subfamily and generic level. Each of the four subgenera sensu Nations (1975), Cancer Linnaeus, 1758, Glebocarcinus Nations,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Decapoda; Brachyura; Cancridae; Tertiary; Paleobiogeography; Tethys. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/534380 |
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| Bishop, G.A.; Feldmann, R.M.; Vega, F.. |
| The podotrematous crab family Dakoticancridae includes four genera: Dakoticancer Rathbun, Tetracarcinus Weller, Avitelmessus Rathbun, and Seorsus Bishop, all known solely from the Late Cretaceous of North America. Lathelicocarcinus Bishop, originally referred to the family, must be reassigned. Fine details of anatomy, preserved on specimens of D. overanus Rathbun and A. grapsoideus Rathbun, permit description of genital openings and interpretation of functional morphology of appendages. Although one species, D. australis Rathbun, has been found associated with burrow structures, all were probably vagrant epifaunal animals on fine- to medium-grained siliciclastic substrata. Food was probably obtained by generalized low-level predation and scavenging.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dakoticancridae; Brachyura; Paleobiology; Paleobiogeography; Late Cretaceous; North America; Mexico; Taxonomy; Cladistics. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/534324 |
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| CÁRDENAS,LEYLA; VIARD,FRÉDÉRIQUE; CASTILLA,JUAN CARLOS. |
| The muricid gastropod Concholepas concholepas, known in Chile as 'loco', is an important component of intertidal and shallow subtidal communities, and is one of the main invertebrates targeted by small-scale fishers (divers) in Chile. Because of its ecological importance and economical value, numerous studies have been conducted to describe its life history, ecology and to understand population dynamics, fishery and management. However, little effort has been done to address the causal factor (s) behind its current geographic distribution and moreover little is known about the past distribution of the different species in the genus. In this paper, first we review the paleobiogeography, historical relationships, taxonomy and geographical distribution of... |
| Tipo: Journal article |
Palavras-chave: Paleobiogeography; Southeastern Pacific coast; Concholepas; Fossil record; Taxonomy; MtDNA variation. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000300010 |
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| CARRILLO-BRICEÑO,JORGE D; GONZÁLEZ-BARBA,GERARDO; LANDAETA,MAURICIO F; NIELSEN,SVEN N. |
| Twelve taxa of chondrichthyan fossils from strata assigned to the Upper Pliocene of the Horcón Formation, Valparaiso region, central Chile, are described and prior records paleobiogeography and paleoenvironmental implications are discussed. The fauna includes Callorhinchus sp., Heterodontus sp., Carcharodon carcharias, Isurus oxyrinchus, Galeorhinus galeus, Carcharhinus brachyurus, Hexanchus griseus, Squatina sp., Pristiophorus sp., Rajidae, Dasyatidae and Myliobatidae. This is one of the most diverse chondrichthyan associations of the Late Neogene of Chile and the rest of South America. |
| Tipo: Journal article |
Palavras-chave: South America; Paleobiogeography; Paleoecology; Neogene; Fossil sharks and rays. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200008 |
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