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| Mateus, C.S.; Alves, M.J.; Quintella, B.R.; Almeida, P.R.. |
| The Iberian Peninsula is a repository for biodiversity, presenting high levels of endemism in both plants and animals. In this peninsular region, brook lampreys confined to small, isolated river basins evolved in allopatry giving rise to evolutionary lineages, as revealed by mitochondrial DNA markers. For a better understanding of the taxonomic status and relationships of Iberian populations of the genus Lampetra, we combined previous data from genetics and morphological analysis (assessed here), and describe three new species of the lamprey genus Lampetra Bonnaterre, 1788 in Portugal. In this region L. planeri actually represent a complex of cryptic species, each having smaller geographic ranges than L. planeri, and consequently, greater vulnerability to... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Critically endangered; Cryptic species complex; Non-parasitic; Lampetra alavariensis sp. nov.; Lampetra auremensis sp. nov.; Lampetra lusitanica sp. nov.; 42.80. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/440771 |
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| Hooijer, D.A.. |
| A joint Dutch-Indonesian expedition to Celebes in 1970 worked especially in the Beru area whence the first described Pleistocene Celebes vertebrate remains came. In the present contribution I shall describe the most important specimens that have been brought to light. My thanks are due to Mr. R. P. Soejono for permission to take certain specimens with me to the Netherlands for study and comparison. The expedition was financed by the Netherlands Foundation for the Advancement of Tropical Research (Wotro) at The Hague. No further remains of Elasmobranchii (sharks and sting rays: Hooijer, 1954b) were found at Sompoh, so there are no additions on that score. Of the giant land tortoise, originally described as Testudo margae Hooijer (1948), an abundance of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22; 42.80. |
| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/319341 |
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| Nemyrovska, T.I.; Samankassou, E.. |
| The present study reports upon the conodont faunas of the uppermost lower Viséan (Carrión unit) through the lower Serpukhovian (Peña unit) deep water Triollo section, Cantabrian Mountains, Palencia, Spain. The condensed succession of grey, laminate, nodular and cherty limestones with marl intercalations contains abundant and diverse conodont faunas. Three new species of Vogelgnathus, V. cantabricus, V. palentinus and V. triolloensis, as well as one new species and one new subspecies of Gnathodus, Gn. boogaardi and Gnathodus girtyi pyrenaeus Nemyrovska & Perret subsp. nov., are described. All stratigraphically important taxa for the studied interval are described. Four conodont zones are distinguished, three in the Viséan, Gnathodus praebilineatus, Gn.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Conodonts; Carboniferous; Viséan; Cantabrian Mountains; Biostratigraphy; Palaeoecology; 42.80. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/210101 |
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| Huwae, P.H.M.; Lavaleye, M.S.S.. |
| Op 11 III 1974 verzamelden de auteurs in de veerhaven van Den Helder een vijftal exemplaren van een tunicaat die nieuw voor ons land mag worden genoemd. Prof. dr. W. Vervoort, Rijksmuseum van Natuurlijke Historie, Leiden, determineerde het dier als Styela clava Herdman, 1882. Drie exemplaren bevinden zich thans in de collectie van het Rijksmuseum van Natuurlijke Historie te Leiden. Styela clava werd voor het eerst beschreven door Herdman (1882) naar exemplaren die gedurende de Challenger-expeditie (1873-1876) werden verzameld. Hij noemt de soort „vrij algemeen" in de Japanse zeeën en zegt dat de dieren tot 7 cm lang kunnen worden. Tot 1953 was de soort alleen bekend van Japan, Korea, Siberië en de zee van Okhotsk. In 1954 beschreef Carlisle (1954) Styela... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.80. |
| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/317229 |
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| Cotoras, D.D.; Allende, M.L.. |
| The structural origin of the vertebrates’ paired limbs is still an unsolved problem. Historically, two hypotheses have been raised to explain the origin of vertebrate limbs: the Archipterygium Hypothesis and the Fin Fold Hypothesis. Current knowledge provides support for both ideas. In the recent years, it has been also suggested that (1) all appendages correspond to body axis duplications and (2) they are originated by the ventralization of the developmental program present in the median fins. The tail bud is also a relevant structure in the attempt to understand the origin of the vertebrates’ limbs. Due to their similarities in gene expression and general organization, both structures should be studied more closely to understand their potential... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Archipterygium hypothesis; Co-option; Fin fold hypothesis; Limb bud; 42.62; 42.80. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/587650 |
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