Alessio Capobianco
@acapomorphic
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Vertebrate paleontologist and evolutionary biologist, currently postdoc at @LMU_Muenchen. Lost among fishes, phylogenies and drifting continents
Munich, Bavaria
Joined October 2018
RT @DonaldDavesne: Possibly the weirdest fossil teleost🐟you'll see today? . Check it out in our new preprint out in @biorxivpreprint, with….
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RT @MichiganEarth: 🎓Join us for James Andrews’ dissertation defense!. 🗓️ Monday, August 26.⌚️11 AM.📍 NUB 2540. Let's support James as he pr….
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This paper is the evolution of the last chapter of my PhD thesis, and it took several research years, from morphological data collection to many rounds of analyses and writing. I am deeply grateful to my coauthor and former advisor @Friedman_Lab for helping and guiding me! (6/6).
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We show that the exclusion of fossils drastically changes our conclusions! Without fossils, we would infer a western Gondwanan origin and a continental vicariance process for the biogeographic history of arowanas and arapaimas! (5/n)
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The very surprising result that the giant arapaima from the Amazon basin and other related freshwater fishes were ancestrally marine holds up under different methodological frameworks (biogeographic analysis vs ancestral habitat) and it is robust to phylogenetic uncertainty (4/n)
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The new tip-dated phylogeny places these marine forms as Osteoglossidae, some of them related to extinct freshwater taxa such as Phareodus from Green River, others more closely related to extant arapaimas. It also establishes a new timeline for the evolution of bonytongues (3/n)
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Marine bonytongues have been known from the fossil record for more than a century (we know >10 spp. now)! Yet, our work is the first attempt to place these marine forms in a time-calibrated phylogenetic and biogeographic context, and in relationship with extant species (2/n)
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New paper alert (open access)! Thanks to a new tip-dated phylogeny of bonytongue fishes (Osteoglossomorpha) with a large sample of fossils, we find that today's freshwater arapaimas and arowanas were ancestrally marine! (1/n)
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RT @Sternarchella: Finished the parrotfish skull, pretty on the inside and outside. These guys are basically just wrasses that dialed their….
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If you're at #Evol2024 #evolution2024 and you're interested in morphological phylogenetics, please join me this afternoon when I'll be presenting on a new way to model among-character rate variation in morphological datasets for Bayesian phylogenetics!
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Exceptional review on some of the best marine fossil deposits in the world!.
🚨Our publication on the famous fish beds of Lebanon is now out!!🚨. We provide the first comprehensive review of the 4 best sites of exceptional preservation of marine Cretaceous fossils in Lebanon, their fossil species, and their >1600 year long history of discovery 1/17🧵
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RT @Friedman_Lab: Outstanding set of presentations in today's session at #NAPC2024 celebrating the contributions of Lance Grande of @FieldM….
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Very excited to be back in Ann Arbor next week! 😄.
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RT @Euphanerops: 🚨 New paper @ZoolJLinnSoc ! 🚨. Early shark relative Acanthodes is one of few Palaeozoic fishes to preserve the gill skele….
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RT @Jake_Atterby: 🐟 New preprint today!.🐠Here's a gloriously detailed, CT-based re-description of iconic Jurassic stem teleost Dorsetichthy….
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#FossilFriday bonus track on our new marine fossil bonytongue Macroprosopon. You can check out photogrammetric 3D models of the holotype in the @umichUMORF website! (anterior piece) and (posterior piece)
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You can find high-resolution photographs and weighted-line drawings of the Macroprosopon holotype by the amazing Carol Abraczinskas (UMMP scientific illustrator) in this Deep Blue Data repository, open access: Bone labelings in the original paper.
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