c ca cb cc cd ce cf cg ch ci ck cl cm cn co cp cr cs ct cu cw cy cz

Перевод: cretaceous

[прилагательное]
меловой

Тезаурус:

1. 14 Trigoniid bivalve, Scabrotrigonia thoracica , Cretaceous, Tennessee.
2. A number of related fossil species are known from cretaceous rocks This species is from Cretaceous fish beds in Turga, Nertchinsk, Siberia.
3. There's more going on than just the Cretaceous collapse.
4. These well-protected dinosaurs each diversified into a number of genera; the three main groups are: the stegosaurs of the Jurassic, with paired plates along the back and a nastily spiked tail ( Stegosaurus ); the ceratopsians, horned, rhinoceros-like dinosaurs of the Cretaceous, including the familiar Triceratops ; the spiky armoured ankylosaurs, tanks on stumpy legs.
5. Sponges are often preserved inside flints, which were originally deposited as hard layers within the Cretaceous chalk.
6. All the dinosaurs, vegetarian and carnivore alike, became extinct at the end of the Cretaceous period ( see p. 135).
7. The cigar-shaped belemnoids ('belemnites') are common fossils accompanying the ammonoids in Jurassic and Cretaceous rocks.
8. Anomalous ammonites: the Cretaceous genus Nipponites.
9. The Cretaceous genus Inoceramus sometimes grew well over a metre in length; fragments of this particular genus are frequently important components of the soft, white Cretaceous limestone known as chalk.
10. In England sea urchins are especially easy to collect from the Cretaceous chalk, where they have been used as one of the fossils for dating the rocks.
11. Whatever momentous steps they took in the Devonian, the lungfish and lobe fins have been very conservative since, for the living lungfish are clearly similar to their Palaeozoic relatives and coelacanth lobe fins like the living genus ( Latimeria ) are known from Cretaceous rocks.
12. There are a number of species generally similar to this one in rocks of Cretaceous and younger age.
13. 27 Sea urchin, Tylocidaris clavigera , Cretaceous, Gravesend, England.