| Автор | Smith, Andrew B. |
| Автор | Savill, Jeremy J. |
| Дата выпуска | 2001 |
| dc.description | ABSTRACTA new genus and species of primitive echinozoan, Bromidechinus rimaporus, is described from the Upper Ordovician of Oklahoma, USA. This has a unique plate arrangement. There is a single perradial series of imperforate plates bounded on either side by a column of perforate ambulacral plates. A double column of interambulacral plates separates ambulacral zones. The sparse record of Ordovician echinozoans is reviewed and cladistic analysis suggests that Bromidechinus represents a lineage that diverged prior to the split between bothriocidarids and main-line echinoids. This leads to a revised interpretation of the earliest stages of morphological evolution of echinoids. |
| Формат | application.pdf |
| Издатель | Royal Society of Edinburgh Scotland Foundation |
| Копирайт | Royal Society of Edinburgh |
| Тема | cladistic analysis |
| Тема | phylogeny |
| Название | Bromidechinus, a new Ordovician echinozoan (Echinodermata), and its bearing on the early history of echinoids |
| Тип | research-article |
| DOI | 10.1017/S0263593300000109 |
| Electronic ISSN | 1755-6929 |
| Print ISSN | 1755-6910 |
| Журнал | Earth and Environmental Science Transactions of the Royal Society of Edinburgh |
| Том | 92 |
| Первая страница | 137 |
| Последняя страница | 147 |
| Аффилиация | Smith Andrew B.; Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK |
| Аффилиация | Savill Jeremy J.; WesternGeco, 455 London Road, Isleworth, Middlesex TW7 5AA, UK |
| Выпуск | 2 |
