lightboxen
Einkaufswagen
alb3846610

Prehistoric, Devonian Landscape

Devonian landscape. The fourth period of the Paleozoic Era, encompassing an interval of geologic time between 418 and 362 million years before present based on radiometric data. The Devonian System encompasses all rocks deposited or formed during the Devonian Period. The Devonian is customarily divided into Lower, Middle, and Upper series and their corresponding epochs. The great diversification of fish in the Devonian has led to the term "Age of Fishes" for the period. The first ray-finned and lobe-finned bony fish appeared, while the placoderms began dominating almost every known aquatic environment. In the oceans, primitive sharks became more numerous than in the Silurian and the late Ordovician. The first ammonite mollusks appeared. Trilobites, the mollusk-like brachiopods and the great coral reefs, were still common. The Late Devonian extinction which started about 375 million years ago, severely affected marine life, killing off all placoderms, and all trilobites, save for a few species of the order Proetida. Illustration originally captioned: Devonian landscape by Franz Unger, 1916.
Teilen
pinterestPinterest
twitterTwitter
facebookFacebook
emailEmail

Zu einem anderen Lightbox hinzufügen

Zu einem anderen Lightbox hinzufügen
add to lightbox print share
Haben Sie bereits ein Konto? Anmelden
Sie haben kein Konto? Registrieren
Dieses Bild kaufen
Daten werden geladen...
Titel:
Prehistoric, Devonian Landscape
Untertitel: Siehe automatische Übersetzung
Devonian landscape. The fourth period of the Paleozoic Era, encompassing an interval of geologic time between 418 and 362 million years before present based on radiometric data. The Devonian System encompasses all rocks deposited or formed during the Devonian Period. The Devonian is customarily divided into Lower, Middle, and Upper series and their corresponding epochs. The great diversification of fish in the Devonian has led to the term "Age of Fishes" for the period. The first ray-finned and lobe-finned bony fish appeared, while the placoderms began dominating almost every known aquatic environment. In the oceans, primitive sharks became more numerous than in the Silurian and the late Ordovician. The first ammonite mollusks appeared. Trilobites, the mollusk-like brachiopods and the great coral reefs, were still common. The Late Devonian extinction which started about 375 million years ago, severely affected marine life, killing off all placoderms, and all trilobites, save for a few species of the order Proetida. Illustration originally captioned: Devonian landscape by Franz Unger, 1916.
Bildnachweis:
Album / USGS/Science Source
Freigaben (Releases):
Model: Nein - Eigentum: Nein
Rechtefragen?
Bildgröße:
4800 x 3156 px | 43.3 MB
Druckgröße:
40.6 x 26.7 cm | 16.0 x 10.5 in (300 dpi)
Schlüsselwörter: