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| Breimer, A.. |
| A very fine preserved specimen of Rhipidocrinus spec. cf. R. perloricatus W. E. Schmidt, 1905 is described in detail. Special attention in text and figures is drawn to the armstructure. Arms proved to be composed of a monoserial main arm-trunk with biserial ramules placed in alternating order. The first ramules are fixed directly to the dorsal cup and placed regularly at the interradial sides of the radius. The base of Rhipidocrinus is somewhat variably composed i. e. the radials may be in contact with the infrabasal plates. The author believes that this proves Ubaghs correct in regarding zygodiplobathrids and eudiplobathrids as variants of one and the same type of diplobathrid basal organisation. |
| Tipo: Article / Letter to the editor |
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| Ano: 1960 |
URL: http://www.repository.naturalis.nl/record/505870 |
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| Breimer, A.. |
| It has been the aim of this study to give a comprehensive description of the important crinoid fauna's of the Palaeozoic core of North Western Spain (provinces Palencia, León and Asturias). This was opportune since fine collections of crinoids had been made during the years 1955—1960 by students of Leiden University (Holland). Moreover, existing collections of Spanish crinoids have not recieved hitherto due attention. Up to the present day only ten species of Palaeozoic crinoids have been known from Spain. Five new genera and sixteen new species of Spanish crinoids are now described. Fourteen previously described genera are reported for the first time to occur in Spain, either from new species or from species not yet sufficiently well known to allow... |
| Tipo: Article / Letter to the editor |
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| Ano: 1962 |
URL: http://www.repository.naturalis.nl/record/506009 |
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