Yup,
John Conway's great. A definitive modern palaeoartist - scientifically well-versed, multi-format, imaginative and prolific.
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Doug Henderson. Not prolific (in terms of palaeoart at least), but a veteran who makes amazing use of lighting and atmosphere.
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John Sibbick. Veteran palaeoartist with a vast body of work. You'll almost certainly have come across him at some point, his paintings are all over the Natural History Museum in London for example. Does skin textures better than anybody, peerless eye for fine detail.
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John Gurche. Hasn't worked on dinosaurs for a long time as far as I know, sadly, but can illustrate life-like images with stunning use of shadow.
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Brian Franczak. If you bought Jurassic Park toys in the early '90s, you might recognise his work from the cards that came with them. I don't know much about him, the most I can find is that he "dropped out of the business" by the millenium.
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Wayne Barlowe. Brilliant fantasy artist who's made the occasional dabble into vibrant palaeoart. He worked as a concept designer on Avatar.
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James Gurney. Might be the best. Jaw-droppingly talented classical painter who's been active for a long time, and combines skill with a depth of knowledge, so his illustrations are as accurate (for the time at least) as they are beautiful. He's best known as the writer/artist of the Dinotopia fantasy books (which anyone with the vaguest interest in the subject should have a copy of), and is still working in the field today.
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Emily Willoughby. One of the most influential artists for maniraptoran illustrations, she has an academic mindset and a preference for emphasising their birdiness. About as accurate as you'll find anywhere, and another definitive modern palaeoartist.
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Michael Skrepnick. One of the few who's in Sibbick's league for skin textures, but more vibrant and dynamic. A prolific and more-than-a-little-bit-awesome veteran.
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Mauricio Anton. Best known for painting Cenozoic mammals, but he's been working for a while and has a varied body of work. His recent book Sabretooth comes highly recommended.
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Mark Witton. Leading pterosaur palaeontologist, with a sideline in general Mesozoic palaeoart (I think he illustrates more dinosaurs than pterosaurs now). Very accurate (with a little reasonable speculation) and with great use of atmosphere. Hugely prolific, I recommend following him on Facebook.
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Larry Felder. I don't know much about him to be honest, but his work speaks for itself.
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Julio Lacerda. Realistic and gorgeous, very modern. Much of his available work is watermarked, sadly.
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Andrey Atuchin. Another skilled modern palaeoartist.
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Mark Hallett. One of those great '80s-90s artists you'll inevitably have come across. Doesn't have a website anymore.
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Luis V. Rey. Specialises in lurid and bizarre reconstructions posed right-in-your-face. Kind of a love-him-or-hate-him artist, he illustrated Thomas Holtz's book. Personally, I really like his more toned-down stuff.
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Julius Csotonyi. Astonishingly life-like digital paintings. Very prolific, but most of his online work is watermarked - best to get the book.
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Gregory S. Paul. The most influential palaeoartist of the last 40 years. A key figure in the dinosaur revolution, and the main advisor on Jurassic Park. The field has arguably moved on from his style, which tends to present animals that are relatively shrink-wrapped to their skeletons, but his lithe, active dinosaurs are still spectacular. His book's worth reading, but he has some weird views on classification.
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...But as you can probably tell from the size of the list, it's a VERY popular field! There are loads of great modern artists I haven't mentioned, like Matt Martyniuk (whose book on Mesozoic stem birds is essential reading), Niroot Puttapipat, Sydney Mohr, Davide Bonadonna, Todd Marshall, Kazuhiko Sano, Sergey Krasovskiy. Plus the classic artists that science has left a long way behind but artistry hasn't, like Charles R. Knight and Z. Burian.