Fish started becoming more widespread in the fossil record. They were small and had downward-pointing, ... Ordovician reefs were also home to large sea lilies, relatives of sea stars.

Two types of jawed fish arose around 450 million years ago — and both make an appearance at the Chongqing site. The new site is remarkable for its diversity of osteichthyans, bony jawed fishes ...

With Anatolepis out of the picture, the team says, the oldest known teeth are those of Eriptychius, which is only known from the Ordovician Period.These do have true dentine – in odontodes on ...

The new study, published in Nature, confirms that these structures in an early vertebrate fish from the Ordovician period about 465 million years ago contained dentin, ...

Armored jawless fish like Astraspis and Eriptychius and ancient arthropods like Anatolepis coexisted in the muddy shallow seas of the Ordovician period, which occurred between 485.4 million and ...

It exists in both the exoskeletons of early vertebrate fish from the Ordovician period and human teeth, according to a study published in the journal Nature. Ancient Fish and Human Teeth. The study ...

Nature - Ancient fish from the Silurian period provide evolutionary insights. Scarce evidence indicates that key evolutionary steps for jawed vertebrates occurred during or before the Silurian ...

Our sensitive teeth originally evolved from the "body armor" of extinct fish that lived 465 million years ago, scientists say. In a new study, the researchers showed how sensory tissue discovered ...

New research on fossils shows teeth first evolved as sensory tissue in the armored exoskeletons of early fish Sensitive teeth ... The new study, published this week in Nature, confirms that these ...

Teeth first evolved as sensory organs, not for chewing, according to a new analysis of animal fossils.The first tooth-like structures seem to have been sensitive nodules on the skin of early fish ...

The new study, published in Nature, confirms that these structures in an early vertebrate fish from the Ordovician period about 465 million years ago contained dentin, ...