''Plagiaulax'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

mammal A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three ...

from the Lower

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

. It was a member of the also extinct order

Multituberculata Multituberculata (commonly known as multituberculates, named for the multiple tubercles of their teeth) is an extinct Order (biology), order of rodent-like mammals with a fossil record spanning over 130 million years. They first appeared in the M ...

, and shared the world with

dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ...

s. It is of the

suborder Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized ...

Plagiaulacida Plagiaulacida is a group of extinct Multituberculata, multituberculate mammals. Multituberculates were among the most common mammals of the Mesozoic, "the age of the dinosaurs". Plagiaulacids are a paraphyletic grouping, containing all multituber ...

" and family Plagiaulacidae. The genus was named by

Hugh Falconer Hugh Falconer MD FRS (29 February 1808 – 31 January 1865) was a Scottish geologist, botanist, palaeontologist, and paleoanthropologist. He studied the flora, fauna, and geology of India, Assam, Burma, and most of the Mediterranean island ...

in 1857, and was the first described multituberculate species. Plagiaulax skull

Fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...

remains of the species ''Plagiaulax becklesii'' are known from the

Lulworth Formation The Lulworth Formation is a geologic formation in England. It dates from the late Tithonian to the mid Berriasian. It is a subunit of the Purbeck Group. In Dorset, it consists of three members, which are in ascending order, the Mupe Member, the ...

of Durlston Bay in

Dorset Dorset ( ; Archaism, archaically: Dorsetshire , ) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by Somerset to the north-west, Wiltshire to the north and the north-east, Hampshire to the east, t ...

, England. They include at least one partial lower jaw with teeth, though there may well be further specimens. Some material has been reported from Galve, Spain. Another possible species, ''P. dawsoni'', was provisionally named by Woodward in 1891. This came from the county of Sussex, which is further east along the English coast. It was subsequently damaged and there seems not to have been a scientific description. Its discoverer,

Charles Dawson Charles Dawson (11 July 1864 – 10 August 1916) was a British amateur archaeologist who claimed to have made a number of archaeological and palaeontological discoveries that were later exposed as frauds. These forgeries included the Piltdown ...

has been implicated in the Piltdown hoax and Pevensey tiles hoax.D.P.S. Peacock, 1973, "Forged Brick-Stamps from Pevensey."

References

* Kielan-Jaworowska Z. and Hurum J.H. (2001), "Phylogeny and Systematics of multituberculate mammals." ''Paleontology'' 44, p. 389-429. Multituberculata Cretaceous mammals Prehistoric mammals of Europe Prehistoric mammal genera {{cretaceous-mammal-stub