Agnatha (hagfish, lampreys, slime eels) FishBase (2009) lists 74 species of hagfish and 42 species of lamprey for the world. Hickman and Roberts (1994) gave a figure of 70 species for the combined ...

Microescultura da concha de Rectartemon (Rectartemon) depressus (Heynemann) (Gastropoda, Stylomatophora, Streptaxidae) The microsculpture of the shell of Rectaktbmon (Rectíartemon) depressus ...

In 'water vampires,' scientists find evidence of stem cells that develop into the sympathetic nervous system.

Lampreys belong to an ancient group of fish called Agnatha that evolved 450 million years ago, predating both dinosaurs and trees.

Full automatic pipelines to mine OR, TAAR, V2R and V1R genes from any vertebrate genome - MaximePolicarpo/Vertebrate_Chemoreceptors_mining ...

One look at this rare, blood-sucking sea creature that washed ashore in the Netherlands this month will give you nightmares.

Due to a planned power outage on Friday, 1/14, between 8am-1pm PST, some services may be impacted. A line drawing of the Internet Archive headquarters building façade. An illustration of a magnifying ...

However, jawless fish groups like the agnatha were among the most incredible Silurian Period animals. Vertebrates were rare then, and agnathas were among the first sets of vertebrates that lived.

ABBA'S Bjorn Ulvaeus has stepped out with his new partner, five months after announcing his split from his wife of 41-years.

Cranial endocasts of fossil and extant lungfish, analysed via tomography and novel principle component analyses designed for use with missing data, show that lungfish forebrain and inner ear regions ...