Pterygotus was featured in the Silurian portion of the first episode of the BBC series Walking with Monsters, where it menaced a Brontoscorpio that was pursuing the Devonian jawless fish Cephalaspis.

*? Pterygotus australis — Silurian, Australia

* Pterygotus barrandei — Silurian, Czech Republic

* Pterygotus cobbi — Silurian, USA, Canada

* Pterygotus denticulatus — Silurian, England

*? Pterygotus grandidentatus — Silurian England

*? Pterygotus impacatus — Silurian, Estonia

* Pterygotus kopaninensis — Silurian, Czech Republic

* Pterygotus lanarkensis — Silurian, Scotland

* Pterygotus lightbodyi — Silurian England

* Pterygotus ludensis — Silurian, England

* Pterygotus marylandicus — Silurian, USA

* Pterygotus monroensis — Silurian, USA

To local societies he contributed many papers, and he continued his active scientific work for fifty-eight years – his last contribution, " Note on a new Australian Pterygotus ," being printed in the Geological Magazine for May 1899.

Pterygotus ( meaning wing-animal or finned one ) is an extinct eurypterid or sea scorpion, the second-largest one known, and one of the largest arthropods of all time.

Pterygotus is distinguishable from other Pterygotids by the curved distal margin of the chelae.

Pterygotus could reach a length of, had a pair of large compound eyes, as well as another pair of smaller eyes in the center of its head.

Pterygotus was an accomplished swimmer and could move with speed and agility through the water.

The larger pair of Pterygotus < nowiki >'</ nowiki > eyes strongly suggests that it was a visually oriented predator.

Then, when a fish or other unwitting animals came within range, Pterygotus would rise up and grab it with its claws.

Fossils of Pterygotus are relatively common, although complete skeletons are rare.

However, the latter is unlikely since Pterygotus was such a large creature.

Thus arose the first monastic community, consisting of anchorites living each in his own little dwelling, united together under one superior.

Even if the text of the Septuagint is proved to be the older, it does not necessarily follow that all these variations first arose after the Greek translation had been made, because two different editions of the same text might have been in process of development side by side ..."

The term " building society " first arose in the 18th century in Great Britain from cooperative savings groups.

Although the Bildungsroman arose in Germany, it has had extensive influence first in Europe and later throughout the world.

A first exception to this rule arose in an 1852 case by New York's highest court, Thomas v. Winchester, which held that mislabeling a poison as an innocuous herb, and then selling the mislabeled poison through a dealer who would be expected to resell it, put " human life in imminent danger.

The term " comic book " arose because the first comic books reprinted humor comic strips.

Progressive conservatism first arose as a distinct ideology in the United Kingdom under Prime Minister Benjamin Disraeli's " One Nation " Toryism.

man kindthat the concept of citizenship arose with the first laws.

According to Needham, though there is no way of answering the question of whether the crossbow first arose among the cultures neighboring ancient China before the rise of Chinese culture in their midst, or whether it spread outwards from China to all the environing peoples, the former seems the more probable hypothesis given linguistic evidence, which posits that the Chinese word for ' crossbow ' came from an Austroasiatic language.

Some World-systems analysts contend capitalism first arose in Song dynasty China by following Kondratiev waves to their source.

Horse taming and horseback culture arose first in the southern steppe grasslands of Central Asia, perhaps approximately in modern Kazakhstan.

The Quartodeciman controversy, the first of several Paschal / Easter controversies, then arose concerning the date on which Pascha should be celebrated.

The first debates about the nature of human evolution arose between Thomas Huxley and Richard Owen.

It was considered to be the first species of the genus Homo until May 2010, when a new species, Homo gautengensis was discovered in South Africa, that most likely arose earlier than Homo habilis.

Giraffids first arose 8 million years ago ( mya ) in south-central Europe during the Miocene epoch.

Hyenas first arose in Eurasia during the Miocene period from viverrid-like ancestors, and developed into two distinct branches ; the lightly built dog-like hyenas and the robust bone-crushing hyenas.

These generalizations of integrals first arose from the needs of physics, and they play an important role in the formulation of many physical laws, notably those of electrodynamics.

In the first half of the first millennium, the Kashmir region became an important center of Hinduism and later of Buddhism ; later still, in the ninth century, Kashmir Shaivism arose.

This variety first arose in the 1950s as a cross between a Kohaku and an Asagi.

About 800, the first castle buildings arose on the Limburg crags.

No diplomatic questions of the first magnitude arose during Van Buren's service as secretary, but the settlement of long-standing claims against France was prepared and trade with the British West Indies colonies was opened.

How a cult of Mary Magdalene first arose in Provence has been summed up by Victor Saxer in the collection of essays in La Magdaleine, VIIIe – XIIIe siècle and by Katherine Ludwig Jansen, drawing on popular devotions, sermon literature and iconology.

From these first motets arose a medieval tradition of secular motets.

" For nationalists, the answer is that the nation existed first, nationalist movements arose to present its legitimate demand for sovereignty, and the nation state met that demand.