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Gymnospermae

Gymnospermae

Weitere Funktionen

Bilder (58 Bilder gesamt)

Versteinertes Holz (Achat) Arizona
Aufrufe (Bild: 1393570323): 1390
Versteinertes Holz (Achat) Arizona

Nahansicht von versteinertem Baumstamm ("Holzachat") aus Arizona, angeschliffen und poliert, im Angebot in Tucson 2014

Sammlung: Wild West Rock, Show Low, Arizona, USA
Copyright: Manganit
Beitrag: Manganit 2014-02-28
Fundstelle: Petrified Forest / Petrified Forest National Monument / Apache Co. / Arizona / USA
versteinertes Holz mit Achat
Aufrufe (Bild: 1103645124): 3286
versteinertes Holz mit Achat

Fundort: Arizona, USA

Sammlung: Bernd G
Copyright: Bernd G
Beitrag: Mineralienatlas 2004-12-21
Fundstelle: Arizona / USA
Chalkosin
Aufrufe (Bild: 1303410247): 733
Chalkosin

Chalkosin hat den Holzstamm komplett umgewandelt, Größe: 2,5 x 1,8 x 0,9 cm, Fundort: Nacimiento Mine, San Pablo, Sandoval Co., New Mexico, USA

Copyright: Michael Roarke
Beitrag: thdun5 2011-04-21
Fundstelle: Nacimiento Mine / San Pablo / Sandoval Co. / New Mexico / USA
Gymnospermenholz
Aufrufe (Bild: 1456318935): 692
Gymnospermenholz

opalisiertes Gymnospermenholz (Gewebeerhaltung nicht ausreichend für eine weitergehende taxonomische Einstufung); max. Dm. 14 cm, FO: Povraznik, SK.

Sammlung: Marian Timpe
Copyright: Marian Timpe
Beitrag: oliverOliver 2016-02-24
Fundstelle: Zailerdorf (Povrazník) / Banská Bystrica (Neusohl) / Banská Bystrica, Okres / Banskobystrický kraj / Slowakei
unb. Gymnosperme
Aufrufe (Bild: 1561109749): 536
unb. Gymnosperme (SNr: 1006)

Versteinertes Holz (Gymnosperme) mit Achat im Zentrum des kompletten Querschnitts, 3,5 x 5 cm, Perm (285 Mio. Jahre); FO: Winnweiler, Donnersbergkreis, Rheinland-Pfalz, Deutschland

Sammlung: Wolfgang Putz
Copyright: Wolfgang Putz
Beitrag: oliverOliver 2019-06-21
Fundstelle: Winnweiler / Donnersbergkreis / Rheinland-Pfalz / Deutschland
Verkieseltes Holz
Aufrufe (Bild: 1333485047): 426
Verkieseltes Holz

Fundort - Gegend bei Lissitschansk (Donezkgebiet); Permokarbon (wahrsch. Oberkarbon/Stefanium).

Sammlung: Andreas K
Copyright: Andreas K
Beitrag: Andreas K 2012-04-03
Fundstelle: Lyssytschansk (Lysychansk, Lissitschansk) / Luhansk, Oblast (Luganskaja oblast) / Ukraine

Zusatzangaben / Zusammenfassung

Taxon obsolet, siehe: https://de.wikipedia.org/wiki/Nacktsamige_Pflanzen

Gruppierung

Zugehö­rig zu

Gaeabionta  ⇒ Domäne: Eukaryota  ⇒ Reich: Plantae  ⇒ Unterreich: Viridaeplantae  ⇒ Infrareich: Streptophyta  ⇒ Stamm: Tracheophyta  ⇒ Unterstamm: Spermatophyta

Taxo­no­mie Stufe

ohne Rang

Die gezeigte Taxonomie ist der Versuch aus Einstufungen verschiedenster Wissenschaftler eine schlüssige Zuordnung zu treffen. Da sich die Taxonomie durch verfeinerte Untersuchungsmethoden und weitere Funde verändern kann, versteht sich unsere Zuordnung nur als Anhaltspunkt.

Name nach

Ent­spre­chen­der Autor (Name, Jahr)

Mabberley, 2000

Andere Sprachen

wissenschaftlich

Gymnospermae

Deutsch

Nacktsamer

alternativ genutzter Name

Gymnospermen

Ausführliche Beschreibung

Weitere Unterteilung

Gymnospermen mit unklarer Verwandtschaft

  • Abteilung: Gnetophyta (Gnetales: mehr als 4 Verwandschaftshypothesen; untere Kreide - Rezent)
  • Abteilung: Hermanophyta (Hermanophytales: Jura - Kreide)
  • Abteilung: Pentoxylales (Zwischen Samenfarn, Gnetales und Angiospermen; Jura)

Beschreibung

Die Gymnospermen wurden erstmals von Theophrast erwähnt. Er faßte darunter alle Pflanzen zusammen, deren Samen ungeschützt sind. Es sind primitive Samenpflanzen, jedoch repräsentieren die Gymnospermae kein phylogenetisch einheitliches Taxon.

Die Samenanlagen sind nicht in einen Fruchtknoten eingeschlossen, der Pollen wird bei der Befruchtung direkt auf die Mikropyle der Samenanlage übertragen. Die Blüten sind fast immer eingeschlechtlich und windbestäubt.

Alle Vertreter der Gymnospermen sind vieljährige Holzpflanzen mit sekundärem Dickenwachstum. Das Holz ist nur wenig differenziert.

Lebenszeitraum in Million Jahren (Ma)

Startalter: 251 Ma - Endalter: 0 Ma
0
0.0117
1.806
5.332
13.65
23.03
37
55.8
65.5
85.8
99.6
130
144.5
161.2
171.6
189.6
203.6
237
251
Meghalayan
Nordgrippian
Greenlandian
Oberes Pleistozän
Mittleres Pleistozän
Unteres Pleistozän
Gelasium
Piacenzium
Zancleum
Messinium
Tortonium
Serravallium
Langhium
Burdigalium
Aquitanium
Chattium
Rupelium
Priabonium
Bartonium
Lutetium
Ypresium
Thanetium
Selandium
Danium
Maastricht
Campan
Santon
Coniac
Turon
Cenoman
Alb
Apt
Barreme
Hauterive
Valangin
Berrias
Tithonium
Kimmeridgium
Oxfordium
Callovium
Bathonium
Bajocium
Aalenium
Toarcium
Pliensbachium
Sinemurium
Hettangium
Rhät
Nor
Karn
Ladin
Anis
Olenekium
Induum
Holozän
Pleistozän
Pliozän
Miozän
Oligozän
Eozän
Paläozän
Obere Kreide
Untere Kreide
Malm
Dogger
Lias
Obere Trias
Mittlere Trias
Untere Trias
Quartär
Neogen
Paläogen
Kreide
Jura
Trias
Startalter: 358.9 Ma - Endalter: 251 Ma
251.1
265.8
275.6
299
311.7
359.2
Changhsingium
Wuchiapigium
Capitanium
Wordium
Roadium
Kungur
Artinsk
Sakmar
Assel
Gzhelium
Kasimovium
Moscovium
Bashkirium
Serpukhovium
Vise
Tournai
Loping
Guadalup
Cisural
Pennsylvanium
Mississippium
Perm
Karbon

Referenz- und Quellangaben, Literatur

Automatische Verweise auf fremde Internet-Inhalte (Verantwortlichkeit liegt beim Betreiber)

Suche nach Taxonomie bei PaleobioDB.org
Suche nach Taxonomie bei Fossilworks
Suche nach Taxonomie bei The Taxonomicon

Nächst niedrigere Taxonomie-Stufe

Abteilung: Coniferophyta McLoughlin et al., 1995

Abteilung: Ginkgophyta Bessey, 1907

Abteilung: Gnetophyta Bessey, 1907

Gattung: Hermanophyton Arnold, 1962

Abteilung: Pteridospermophyta Lapasha and Miller, 1985

Liste aktualisieren

Aktualität: 18. Jun 2021 - 15:12:30

Auf gleicher taxonomischer Ebene (Geschwister) (Anzahl: 5)

ohne Rang: Angiospermae Mabberley, 2000

Gattung: Condrusia Stockmans, 1948

Abteilung: Cycadophyta Bessey, 1907

Gattung: Mtchedlishvilia Srivastava, 1970

Ordnung: Pentoxylales Kenrick and Crane, 1997

Liste aktualisieren

Aktualität: 18. Jun 2021 - 15:12:30

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Lokationen mit GPS-Informationen

Referenzen von PBDB, Lizenz: CC BY

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