Andrew Smith | |
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Senior Research Scientist, Natural History Museum | |
Assumed office 1991 | |
Personal details | |
Born | Andrew Benjamin Smith 6 February 1954 Dunoon, Argyllshire, Scotland |
Occupation | Palaeontologist |
Andrew Benjamin Smith (born 6 February 1954 in Dunoon, Argyll, Scotland) is a British palaeontologist, known for his research on the palaeontology of echinoderms. [1] [2] His cladistic classification of the phylum Echinodermata has become standard. [3]
Growing up in Stonehaven on the eastern coast of Scotland, Andrew B. Smith at age 13 was inspired to collect fossils after watching an episode on fossil collection aired on the television programme Blue Peter . On holiday in 1967 he first collected fossils from the Rhaetian age Penarth Group at Watchet, Somerset. In 1968 on holiday in Shetland, he collected a complete fossil of a Devonian fish ( Dipterus valenciennesi ) — the specimen was put on display at the Shetland Museum in Lerwick. From 1973 to 1976 Smith studied geology at the University of Edinburgh, where he graduated with first class honours. For the summer of 1976 he received, on the recommendation of Euan Clarkson, a Carnegie Award to study echinoid fossil distribution in the Aalenian (Inferior Oolite) of the Cheltenham region of Gloucestershire. [1] [4] In autumn 1976 he matriculated as a graduate student in the biology department of the University of Exeter. There he received in 1980 a PhD under the supervision of David Nichols (1930–2020). Smith's PhD thesis involved a breakthrough in echinoid functional morphology through his use of the scanning electron microscope combined with histological preparations and some in vivo research. He published four major papers dealing with links between echinoid skeletal histology and echinoid soft-tissue anatomy. From 1980 to 1982 he worked at the University of Liverpool as a research assistant to Christopher R. C. Paul. [1] [5] At the Natural History Museum, London, Smith was a scientific officer from 1982 to 2012, when he retired. During his 30 years of employment at the museum, he was the author or co-author of many papers on the phylogeny, systematics, and taxonomy of echinoderms and gained an international reputation as a leading expert on echinoderm palaeontology. [1] [6] [7] In 1985 he participated in Western scientists' first geological traverse of the Tibetan plateau. [8] Smith was the co-author, with Claud William Wright, of a twelve-part series of monographs on British echinoid fossils of the Cretaceous. [9] [10]
Smith's research is not strictly limited to echinoderms but also deals with methods of inferring patterns in evolutionary development from the fossil record. With Colin Patterson, he pointed out possible pitfalls in interpreting the fossil record. [1] [11] Smith and colleagues assessed mass extinctions such as that at the Cretaceous/Tertiary transition from studies on spiny-shelled fossils. [12] [13] He did research on the earliest evolutionary origins of echinoderms [14] and establishing the dates of the evolutionary origins of metazoan body morphologies. [15] He also carried out comparative studies on evolution and species diversification using molecular biological methods [16] [17] and dealt with ancient DNA of fossil insects preserved in amber. [18] [19] [20]
Andrew B. Smith designed and created a web-based, echinoid-specific approach to systematic zoology and paleontology called "The Echinoid Directory" sponsored by the Natural History Museum, London. [21] The website is driven by the international community of echinoid scientists, who contribute via through a web interface. There are over 2,000 species pages and over 10,000 specimen illustrations. [1]
The Linnean Society of London awarded Andrew B. Smith in 1993 the Linnean Society Bicentenary Medal and in 2005 the Zoology Medal. The Geological Society of London award him in 1995 the Bigsby Medal and in 2002 the Lyell Medal. [1] Smith was elected in 1996 a Fellow of the Royal Society of Edinburgh [22] and in 2002 a Fellow of the Royal Society. He received in 2004 the Palaeontological Association's Golden Trilobite Award (for best website) [1] and in 2020 the association's Lapworth Medal. [23] In 2005 he was elected a corresponding member of the Paläontologische Gesellschaft. [24]
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: CS1 maint: postscript (link)An extinction event is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms. It occurs when the rate of extinction increases with respect to the background extinction rate and the rate of speciation. Estimates of the number of major mass extinctions in the last 540 million years range from as few as five to more than twenty. These differences stem from disagreement as to what constitutes a "major" extinction event, and the data chosen to measure past diversity.
Paleontology, also spelled palaeontology or palæontology, is the scientific study of life that existed prior to the start of the Holocene epoch. It includes the study of fossils to classify organisms and study their interactions with each other and their environments. Paleontological observations have been documented as far back as the 5th century BC. The science became established in the 18th century as a result of Georges Cuvier's work on comparative anatomy, and developed rapidly in the 19th century. The term has been used since 1822 formed from Greek παλαιός, ὄν, and λόγος.
Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are members of the largest crinoid order, Comatulida. Crinoids are echinoderms in the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. They live in both shallow water and in depths over 9,000 metres (30,000 ft).
Metatheria is a mammalian clade that includes all mammals more closely related to marsupials than to placentals. First proposed by Thomas Henry Huxley in 1880, it is a more inclusive group than the marsupials; it contains all marsupials as well as many extinct non-marsupial relatives. It is one of two groups placed in the clade Theria alongside Eutheria, which contains the placentals. Remains of metatherians have been found on all of Earths continents.
In the geological timescale, the Tithonian is the latest age of the Late Jurassic Epoch and the uppermost stage of the Upper Jurassic Series. It spans the time between 149.2 ±0.7 Ma and 145.0 ± 4 Ma. It is preceded by the Kimmeridgian and followed by the Berriasian.
Michael James Benton is a British palaeontologist, and emeritus professor of vertebrate palaeontology in the School of Earth Sciences at the University of Bristol. His published work has mostly concentrated on the evolution of Triassic reptiles but he has also worked on extinction events and faunal changes in the fossil record.
Philip Conrad James Donoghue FRS is a British palaeontologist and Professor of Palaeobiology at the University of Bristol.
Ctenochelys is an extinct genus of marine turtle, which existed during the Cretaceous period, and lived in the shallow waters of the Western Interior Seaway. Its fossils have been found in the Ripley Formation and Mooreville Chalk of central Alabama, United States. It was first named by C. H. Sternberg in 1904, and contains two species, C. stenoporus and C. acris.
The origin of the brachiopods is uncertain; they either arose from reduction of a multi-plated tubular organism, or from the folding of a slug-like organism with a protective shell on either end. Since their Cambrian origin, the phylum rose to a Palaeozoic dominance, but dwindled during the Mesozoic.
Homalozoa is an obsolete extinct subphylum of Paleozoic era echinoderms, prehistoric marine invertebrates. They are also referred to as carpoids.
This list of fossil echinoderms described in 2014 is a list of new taxa of echinoderms of every kind that have been described during the year 2014. The list only includes taxa at the level of genus or species.
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the K–T extinction, was the mass extinction of three-quarters of the plant and animal species on Earth approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs. Most other tetrapods weighing more than 25 kg (55 lb) also became extinct, with the exception of some ectothermic species such as sea turtles and crocodilians. It marked the end of the Cretaceous period, and with it the Mesozoic era, while heralding the beginning of the current era, the Cenozoic. In the geologic record, the K–Pg event is marked by a thin layer of sediment called the K–Pg boundary, Fatkito boundary or K–T boundary, which can be found throughout the world in marine and terrestrial rocks. The boundary clay shows unusually high levels of the metal iridium, which is more common in asteroids than in the Earth's crust.
Cincta is an extinct class of echinoderms that lived only in the Middle Cambrian epoch. Homostelea is a junior synonym. The classification of cinctans is controversial, but they are probably part of the echinoderm stem group.
Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 2017.
Susannah "Susie" Catherine Rose Maidment is a British palaeontologist at the Natural History Museum, London. She is also an honorary Professor at the University of Birmingham. She is internationally recognised for her research on ornithischian dinosaur evolution, and was awarded the 2016 Hodson Award of the Palaeontological Association and the 2017 Lyell Fund of the Geological Society of London. She was featured as a 2019 National Geographic Women of Impact.
Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 2018.
Richard James Butler is a vertebrate palaeontologist at the University of Birmingham, where he holds the title of professor of palaeobiology. His research focuses on ornithischian dinosaur evolution, dinosaur origins, and fossil tetrapod macroevolution.
Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 2020.
Soluta is an extinct class of echinoderms that lived from the Middle Cambrian to the Early Devonian. The class is also known by its junior synonym Homoiostelea. Soluta is one of the four "carpoid" classes, alongside Ctenocystoidea, Cincta, and Stylophora, which made up the obsolete subphylum Homalozoa. Solutes were asymmetric animals with a stereom skeleton and two appendages, an arm extending anteriorly and a posterior appendage called a homoiostele.
Ctenocystoidea is an extinct clade of echinoderms, which lived during the Cambrian and Ordovician periods. Unlike other echinoderms, ctenocystoids had bilateral symmetry, or were only very slightly asymmetrical. They are believed to be one of the earliest-diverging branches of echinoderms, with their bilateral symmetry a trait shared with other deuterostomes. Ctenocystoids were once classified in the taxon Homalozoa, also known as Carpoidea, alongside cinctans, solutes, and stylophorans. Homalozoa is now recognized as a polyphyletic group of echinoderms without radial symmetry. Ctenocystoids were geographically widespread during the Middle Cambrian, with one species surviving into the Late Ordovician.
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