GCR block - Tertiary Reptilia (TER-REP)

Tertiary Reptilia

Block Description

UK map showing distribution of GCR sites of GCR block TER-REP
Distribution of GCR sites of GCR block Tertiary Reptilia

In contrast to the manner in which most invertebrate fossils are represented in the GCR, fossils of vertebrates, arthropods (except trilobites) and terrestrial plants do have their own dedicated GCR Blocks, because of the relative rarity of the fossil material. The GCR sites selected for the Tertiary Reptilia GCR Block represent the British fossil record of terrestrial and aquatic reptiles of the Tertiary sub-Era (which spanned from 65 to 2 million years ago (Ma), and which was preceded by the Mesozoic Era). At the end of the Cretaceous Period (the last Period of the Mesozoic era) there was a major, global mass-extinction event (the ‘K-T’ event [Cretaceous-Tertiary]), and this had a significant effect on the faunas of the time, with approximatley 85% of species becoming extinct. The end of the Tertiary sub-Era is marked by the onset of the ‘Great Ice Age’ (Quaternary Period), thus enabling this ‘unit’ of the fossil record to have a developing, but characteristic, faunal distinctiveness.

Earlier fossil reptiles are afforded their own GCR Blocks, ‘Permian-Triassic Reptilia’and ‘Jurassic- Cretaceous Reptilia’. See PER-TRI-RP and JUR-CRE-RP.

Palaeontological characteristics

The reptiles evolved from their amphibian forebears over 300 million years ago. The oldest postulated fossil reptile is known from the Carboniferous of Scotland. Reptiles radiated extensively during the Permian Period and the Mesozoic Era, a span of time often referred to as the ‘Age of Reptiles’. Britain’s 500 hundred or more fossil reptile sites provide abundant information on reptiles of this time, including key Triassic sites that document the pre-dinosaur times, and unique dinosaurian faunas of Mid Jurassic and Early Cretaceous age. Marine reptiles (plesiosaurs, ichthyosaurs, crocodilians) are richly represented in the Early and Late Jurassic in particular. A number of Tertiary localities have yielded rich faunas of turtles, crocodilians and squamates.


The palaeogeography of each relevant geological period of the Tertiary sub-Era can be found elsewhere on the pages of this website. SeeTER-IGN, PGN, NEO

GCR site selection

Owing to the rarity of fossil reptile material, this GCR Block represents something of a special case with regard to including all of the sites yielding, or that have yielded, significant types and quantities of scientifically important material that help elucidate the evolution, diversification and extinction of the main reptile groups.

The sites selected for this Block aim to represent distinct reptile assemblages showing diversification and extinction associated with the Tertiary sub-Era.

Volume Introduction

Tertiary Reptilia

Site List

Your selection found 5 GCR sites. Sites are sorted alphabetically by country, local authority and then by site name -
CodeNameCountryLocal AuthorityGrid RefGCR Site Account
1343Barton CliffEnglandHampshire CCSZ224930Not available
1342Hordle CliffEnglandHampshire CCSZ254925Not available
1341Bouldnor CliffEnglandIsle of WightSZ375902Not available
1340Headon HillEnglandIsle of WightSZ305856Not available
1338Warden PointEnglandKent CCTQ955738Not available
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