East Kirkton Quarry is a former limestone

Limestone

Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....

 quarry, now better known as a fossil site known for terrestrial fossils from the fossil

Fossil

Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...

-poor "Romer's gap

Romer's gap

Romer's Gap is an example of a gap in the fossil record used in the study of evolution. Such gaps represent a period from which excavators have found no or very few fossils. Romer's gap is named after paleontologist Dr...

, a 15 million year period at the beginning of the Carboniferous

Carboniferous

The Carboniferous is a geologic period and system that extends from the end of the Devonian Period, about 359.2 ± 2.5 Mya , to the beginning of the Permian Period, about 299.0 ± 0.8 Mya . The name is derived from the Latin word for coal, carbo. Carboniferous means "coal-bearing"...

. Best known are the labyrinthodont fossils, as the period coincides with the time where the modern lineages of tetrapod

Tetrapod

Tetrapods are vertebrate animals having four limbs. Amphibians, reptiles, birds and mammals are all tetrapods; even snakes and other limbless reptiles and amphibians are tetrapods by descent. The earliest tetrapods evolved from the lobe-finned fishes in the Devonian...

s are thought to have evolved.

Location

The Quarry itself is located in the town of Bathgate

Bathgate

Bathgate is a town in West Lothian, Scotland, on the M8 motorway west of Livingston. Nearby towns are Blackburn, Armadale, Whitburn, Livingston, and Linlithgow. Edinburgh Airport is away...

 in West Lothian

West Lothian

West Lothian is one of the 32 unitary council areas in Scotland, and a Lieutenancy area. It borders the City of Edinburgh, Falkirk, North Lanarkshire, the Scottish Borders and South Lanarkshire....

, Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. Geologically, it sits fairly central to the middle of the fossil-rich Scottish Central Lowlands

Central Lowlands

The Central Lowlands or Midland Valley is a geologically defined area of relatively low-lying land in southern Scotland. It consists of a rift valley between the Highland Boundary Fault to the north and the Southern Uplands Fault to the south...

. The site is dominated by volcanic tuff

Tuff

Tuff is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff is sometimes called tufa, particularly when used as construction material, although tufa also refers to a quite different rock. Rock that contains greater than 50% tuff is considered...

 and limestone, and layered silica deposits, indicating the presence of a hot spring

Hot spring

A hot spring is a spring that is produced by the emergence of geothermally heated groundwater from the Earth's crust. There are geothermal hot springs in many locations all over the crust of the earth.-Definitions:...

 associated with volcanism

Volcanism

Volcanism is the phenomenon connected with volcanoes and volcanic activity. It includes all phenomena resulting from and causing magma within the crust or mantle of a planet to rise through the crust and form volcanic rocks on the surface....

.

Bathgate itself is a suburb of Edinburgh

Edinburgh

Edinburgh is the capital city of Scotland, the second largest city in Scotland, and the eighth most populous in the United Kingdom. The City of Edinburgh Council governs one of Scotland's 32 local government council areas. The council area includes urban Edinburgh and a rural area...

, however, urban sprawl

Urban sprawl

Urban sprawl, also known as suburban sprawl, is a multifaceted concept, which includes the spreading outwards of a city and its suburbs to its outskirts to low-density and auto-dependent development on rural land, high segregation of uses Urban sprawl, also known as suburban sprawl, is a...

 has made the land of the quarry into a de facto suburb of Glasgow

Glasgow

Glasgow is the largest city in Scotland and third most populous in the United Kingdom. The city is situated on the River Clyde in the country's west central lowlands...

. The land next to the quarry itself is developed for housing.

Fossils

The quarry was most active in the 1830s and 1840s. During these years it yielded some interesting fossils of Carboniferous plants and eurypterids, though this was not uncommon for quarries in the area. When the quarry closed, the place was forgotten until Stan Wood found fossils of primitive tetrapod

Tetrapod

Tetrapods are vertebrate animals having four limbs. Amphibians, reptiles, birds and mammals are all tetrapods; even snakes and other limbless reptiles and amphibians are tetrapods by descent. The earliest tetrapods evolved from the lobe-finned fishes in the Devonian...

s there in 1984. The quarry was bought by Wood for fossil collection, and yielded extremely interesting finds, including a huge sample of bout terrestrial and marine fossil arthropods, examples of several classes

Class (biology)

In biological classification, class is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, order, family, genus, and species, with class fitting between phylum and order...

 of fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

es and early amphibians. The latter include multiple examples of Balanerpeton

Balanerpeton

Balanerpeton is an extinct genus of temnospondyl amphibian from the Early Carboniferous period. It reached approximately 50 cm in size .Balanerpeton woodi was discovered by Stanley Wood and is the earliest and most common tetrapod in the East Kirkton Quarry assemblage of terrestrial...

(a temnospondyl), Sivanerpeton and Eldeceeon

Eldeceeon

Eldeceeon is an extinct genus of reptiliomorph from the Early Carboniferous of Scotland. It is known from two fossil specimens found within the Viséan-age East Kirkton Quarry in West Lothian. The type and only species, E. rolfei, was named in 1994...

(basal anthracosaurs). A single specimen of a small animal named Westlothiana

Westlothiana

Westlothiana lizziae was a reptile-like amphibian or possibly early reptile that bore a superficial resemblance to modern-day lizards. It lived during the Carboniferous period, about 350 million years ago. The type specimen was discovered in East Kirkton Quarry, Bathgate, Scotland, in 1984, and was...

has variously been interpreted as an anthracosaur, a proto-amniote

Amniote

The amniotes are a group of tetrapods that have a terrestrially adapted egg. They include synapsids and sauropsids , as well as their fossil ancestors. Amniote embryos, whether laid as eggs or carried by the female, are protected and aided by several extensive membranes...

 and possibly even the oldest known reptile

Reptile

Reptiles are members of a class of air-breathing, ectothermic vertebrates which are characterized by laying shelled eggs , and having skin covered in scales and/or scutes. They are tetrapods, either having four limbs or being descended from four-limbed ancestors...

.