How to use in-sentence of “ordovician”:
+ Fossil bryozoans first appear in the early Ordovician and had a huge adaptive radiation.
+ Graptolites with relatively few branches were derived from the dendroid graptolites at the beginning of the Ordovician period.
+ By the Ordovician period the gastropods were a varied group present in a few aquatic habitats.
+ The Ordovician was named after the Welsh tribe of the “Ordovices”.
+ They developed in the Cambrian and became a significant sea predator in the Ordovician period.
+ Other Ordovician oddballs are also present, including cheloniellids and horseshoe crabs in abundance.
+ Trilobites in the Ordovician were very different from their predecessors in the Cambrian.
+ This was a plate tectonicsplate tectonic collision which took place from Mid Ordovician to Mid Devonian periods, during the closure of the Iapetus Ocean.
Example sentences of “ordovician”:
+ Recognition of the Ordovician period was slow in Britain, but elsewhere it was quickly accepted.
+ The first echinoid fossils are from the Lower Ordovician period.
+ Recognition of the Ordovician period was slow in Britain, but elsewhere it was quickly accepted.
+ The first echinoid fossils are from the Lower Ordovician period.
+ The Gnathostomata first appeared in the Ordovician period and became diverse in the Devonian period, the ‘Age of Fishes’.
+ A dolerite dike dyke of Ordovician age can be seen in the melange at Trwyn y Gorlech in the north.
+ The earliest land plants evolved from aquatic plants around 450 million years ago in the Ordovician period.
+ They were predators which thrived in the warm, shallow seas and lakes of the Ordovician to the Permian periods, around 460 to 248 million years ago.
+ The geology make up is of Ordovician or Tertiary sediments.
+ The extinctions may have been caused by an ice age that occurred at the end of the Ordovician period: the end of the Ordovician was one of the coldest times in the last 600 million years of earth history.
+ The Ordovician was a time of calcite sea geochemistry in which low-magnesium calcite was the main Marine biologymarine precipitate of calcium carbonate.
+ No pores are present in the great majority of Ordovician bryozoans, but skeletal evidence shows that epithelia were continuous from one zooid to the next.
+ This is known as the Ordovician Bioerosion Revolution.
+ They survived at least until the Ordovician period.Levin, Harold.
+ Though less famous than the Cambrian explosion, the Ordovician featured an adaptive radiation, which was no less remarkable.