The weird and wonderful of the Cambrian (Part 1): Agnostus pisiformis and the Agnostids – the minimalist trilobites of the Cambrian Seas

Jon Trevelyan (UK) This is the first in my series of short articles on fossils of the Cambrian. Among the most intriguing arthropods of the Cambrian and Ordovician are the agnostids – tiny, simplified, and often beautifully preserved creatures long grouped together with trilobites, but still raising questions about their … Read More

A history of the plate tectonics of Britain (Part 1): Britain assembled – oceans, collisions and the making of a geological patchwork

Britain is often described as geologically quiet. There are no active volcanoes, no subduction zones, and only modest earthquakes. Yet, for its size, few countries display such a concentration of geological variety. Mountain uplands, volcanic terrains, deeply folded rocks, and ancient metamorphic cores all occur within a relatively small area. The explanation for this diversity lies not in Britain’s present tectonic setting, but in a long and complex tectonic history that assembled the country piece by piece from fragments that originated far apart.

The weird and wonderful of the Ediacaran Period (Part 10): Tribrachidium – the tri-radial enigma of the Ediacaran seas

Jon Trevelyan (UK) This is the tenth of my series of short articles on fossils of the Ediacaran Period. Of all the organisms populating the Ediacaran oceans, Tribrachidium stands out as one of the most geometrically extraordinary. Living around 555 million years ago, it possessed a perfectly tri-radial body plan … Read More

Book review: A Field Guide to Collecting British Cenozoic Fossils, by Steve Snowball and Alister Cruickshanks

Books devoted specifically to collecting Britain’s Cenozoic fossils are surprisingly rare. While collectors are well served by guides to the country’s Palaeozoic and Mesozoic fossils, the younger deposits that record the last 66 million years of Earth history have received far less attention. A Field Guide to Collecting British Cenozoic Fossils aims to address that gap by providing a practical introduction to the fossils and collecting sites associated with these deposits.

Geology museums of mainland Europe: The Museo di Storia Natural, geology and palaeontology, Verona

Jon Trevelyan (UK) The geology and palaeontology section at the Museo di Storia Naturale: geology and palaeontology in Verona is one of those museum experiences that perhaps quietly insists you pay attention if you notice it there among the other attractions of this lovely town. It doesn’t shout with flashy … Read More

Book review: The Oldest Rocks on Earth: A Search for the Origins of Our Planet, by Simon Lamb

The Oldest Rocks on Earth is composed in a consciously popular-science style, making it an enjoyable read, as well as an informative one for readers interested in how geologists reconstruct the earliest history of our planet. This approach allows Simon Lamb to interweave the science with his own research history, particularly his PhD work and later field studies in Swaziland (now renamed Eswatini), where he investigated some of the oldest rocks on Earth.

The death of the Upper Greensand: A stratigraphic obituary for a vanished formation

For much of the twentieth century, generations of students (and amateurs like me) learned a tidy, mid-Cretaceous succession for southern England:

Lower Greensand – Gault Clay – Upper Greensand – Chalk.

It appeared in every textbook, diagram and museum panel. There was an appealing symmetry to the sequence, with two sands bracketing the impervious Gault and the Chalk resting neatly above. It seemed so natural that few doubted it.

The weird and wonderful of the Ediacaran Period (Part 5): Fractofusus – the dominant rangeomorph of the Mistaken Point biota

Jon Trevelyan (UK) This is the sixth of my series of short articles on fossils of the Ediacaran Period Fractofusus is one of the most abundant and ecologically revealing organisms of the Ediacaran Period, flourishing around 565 million years ago in the deep-marine settings of the Mistaken Point Formation, Newfoundland. … Read More

Volcanoes, monsoons and a flooded supercontinent (Part 1): The climate engine of the Carnian Pluvial Event

This is the first of three articles on the Carnian Pluvial Event (CPE), often referred to as an ‘event’, although increasingly recognised as a prolonged episode, as I will discuss) of the Triassic that seems to have grown in importance and interest, and only become more widely known in relatively recent times. In this article, I will introduce the topic, concentrating on what might be called the “climate engine” driving what was happening.

The weird and wonderful of the Ediacaran Period (Part 2): Charniodiscus – a frond in the quiet depths of the Ediacaran seas

Jon Trevelyan (UK) This is the second of my series of short articles on fossils of the Ediacaran Period. Charniodiscus is one of the most characteristic frondose organisms of the Ediacaran Period, living around 560-555 million years ago in the quiet, low-energy seafloors that preceded the Cambrian explosion. With its … Read More

Book review: The Southern Pennines, by John Collinson and Roy Rosen (Classic Geology in Europe 13)

The Classic Geology in Europe series has, over many years, established a distinctive and reliable identity: authoritative regional syntheses written by specialists, designed for geologists who want to understand landscapes through field observation rather than armchair generalities. The Southern Pennines sits comfortably within that tradition and, in several respects, exemplifies the mature strengths of the series.

The weird and wonderful of the Pre-Cambrian (Part 2): Strelley Pool stromatolites – among the oldest signs of life

Jon Trevelyan (UK) This is the second of my series of short articles on fossils of the Pre-Cambrian. The Strelley Pool stromatolites, preserved in the ~3.45-billion-year-old Strelley Pool Formation of Western Australia, rank among the oldest widely accepted macroscopic evidence of life. Formed on shallow marine carbonate platforms during the … Read More

Geology museums of mainland Europe: Agios Georgios Cave, Kilkis: 50 years of history – 30,000 years of prehistory

Vassilis Makridis (Greece), Evangelia Tsoukala (Greece), Evangelos Vlachos (Greece), Katerina Tsekoura (Greece), Wilrie van Logchem (The Netherlands) and Dick Mol (The Netherlands) In northern Greece, 45km north of Thessaloniki, one of the few public caves in Northern Greece is situated in the Agios Georgios Hill, near Kilkis (Figs. 1 and … Read More

Plants, fish and floodplains: The Heol Senni story

High in the central Brecon Beacons, not far from the quiet village of Heol Senni, a small disused quarry cuts into green-grey sandstone, not far from the quiet village of Heol Senni, lies a small disused quarry cut into green-grey sandstone. To most passers-by, it is an unassuming feature – a slice of rock along the hillside with ruined quarry buildings, streaked with moss and fern. Yet, within those thin beds of rock, lies one of the most eloquent records of life’s first steps onto land: a fossil flora that captures the dawn of terrestrial ecosystems, and a single, irreplaceable fossil fish that swam among the earliest green riverbanks.

Book review: Fossils on the Seashore: Beachcombing and Palaeontology, by Stephen K Donovan

At first glance, the title might mislead you into expecting a simple guide to finding fossils while strolling along the beach – a sort of field companion for holiday rock-hunters. But Stephen Donovan’s Fossils on the Seashore is a very different creature. It’s not about collecting curiosities for the mantelpiece. It’s about understanding the dynamic relationship between the living and the fossil record, and how coastlines act as natural laboratories for palaeontological and neoichnological study