Kedves Miklós: Plant microfossils from the Upper Cretaceous and Lower Tertiary layers of Northern Spain II. In: Plant cell biology and development, (7). pp. 13-36. (1996)
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Absztrakt (kivonat)
This paper presents the qualitative and quantitative palynological data isolated from the sediments of the locality of Quintanilla La Ojada - Losa Valley (Northern Spain). Three new form-species were described, these are the following: Triangulotricolporites ibericus n. fsp., Plicapollis ibericus n. fsp., Retistephanoporites krutzschii n. fsp. To evaluate the quantitative spore-pollen data the stratigraphical units of MARTINS (1988) were used. Regarding the preservation of the different samples very important differences were observed. The samples of the lower part of the sections (Santonian and Campanian) are very poor in sporomorphs, some Normapolles taxa (cf. Complexiopollis, Praebasopollis and Vacuopollis) represent the early Brevaxonate pollen grains. The basal layer is rich in Dinokystes. Remarkable occurrence of the Hystrichosphaeridae was observed at the middle part of the Campanian. Well preserved and rich pollen assemblages were observed in some samples of the U. Maestrichtian - Paleocene and Paleocene with several pecularities, as follows: 1. The characteristic boreal Maestrichtian Normapolles taxa (Pseudotrudopollis fspp., Kriegeripollenites fsp., Hofkeripollenites fspp., Romeinipollenites fsp., etc.) were not observed. 2. The richness of the form-genus Ilexpollenites is also unusual. 3. Several Normapolles and Postnormapolles, which are characteristic for the Paleocene layers were observed. From this point of view the form-genus Stephanoporopollenites must be emphasized. 4. The larger size of the Normapolles and Postnormapolles which was first published from the Paleocene sediments of Loksbergen was also observed here. Two Paleocene samples (Zone, G) are extremely rich in the cysts of Hystrichosphaeridae, and in several types oiangiosperm pollen grains. One sample was investigated from the Eocene which is extremely poor in organic microremains.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Plant cell biology and development |
| Dátum: | 1996 |
| Kötet: | 7 |
| ISSN: | 0866-5443 |
| Oldalak: | pp. 13-36 |
| Nyelv: | angol |
| Kiadás helye: | Szeged |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/46856/ |
| Kulcsszavak: | Palinológia, Paleobotanika - harmadkor - Spanyolország |
| Megjegyzések: | Bibliogr.: p. 34-36. ; ill. ; összefoglalás angol nyelven |
| Szakterület: | 01. Természettudományok 01. Természettudományok > 01.06. Biológiai tudományok |
| Feltöltés dátuma: | 2017. júl. 11. 11:38 |
| Utolsó módosítás: | 2026. jan. 20. 10:20 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/47818 |
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