A couple of giant crates arrived today that will have to live in the hallway for awhile. I spent way too much time making this sign to put on them. I think I need to 'distress' the paper for realism before putting it up.
Thomas A. Hegna, Ph.D
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Arthropod paleontologist, father, science educator in western New York. Teaches paleontology, Earth history, stratigraphy, and more at SUNY Fredonia. University of Iowa and Yale G&G alum. WIU refugee.
myrmepropagandistI'm adding "Evolution of Ant" to my list of things to draw.
It would be like one of those old-school natural history museum murals. Starting with single-celled life in the tidal pools of early Myrmecos, then the first multicellular life, then the first sea arthropods, then a momentous moment when a little crab creature first steps on land! Then the early insects, primitive solitary wasps with the glimmers of consciousness, eusocial insects discovering fire ... and at last ants!
I found two new chapters on Devonian clam shrimp in a monograph I found as a pdf online. Always kind of a thrill to find taxonomic references that no one has cited in over 50 years. The quality of the pdf could be better . . . I hope interlibrary loan comes through for me.
Two unexpected cladoceran systergroups--Oligopoda and Magipoda--have shuffled the cladoceran orders according to Van Damme et al (2022). I certainly did not get this topology in my thesis . . . #arthropoda #crustacea #cladocera #phylogeny
New paper by Höpel et al (2023) in the Journal of Crustacean Biology detailing the first mitochondrial genomes from Anaspidacean 'shrimp' (formerly 'syncarids'). They must be lonely, living only in Tasmania. They should be reintroduced around the globe as they were in the Paleozoic! Viva la Anaspides!
And counts of male vs. female (photo by Pellmann), with over two males found for every female--in stark contrast to my work on Australian fossil anostracans from the Cretaceous.
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Pellmann draws our attention to the preserved eggs (photo by M. Engelmann).
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Pellmann has some spectacular photos that give us an idea of what the early stages of fairy shrimp fossilization might look like. Like these details of dead Tanymastix stagnalis (photo by M. Engelmann).
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For the non-deutsch, the title translates as "About simple ways of detecting large branchiopods and results of the evaluation of a thanatocoenosis of Tanymastix stagnalis (Linnaeus, 1758) from Lake Eichen"--basically, how do you spot evidence of branchiopods AFTER the pool dries out. Pictured are Tanymastix stagnalis on an algal mat (photo by Pellmann). #Germany #paleontology #palaeontology #biology
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The citation: Pellmann, H. 2021. Über einfache nachweismöglichkeiten von großbranchiopoden und ergebnisse der auswertung einer thanatozönose von Tanymastix stagnalis (Linnaeus, 1758) aus dem eichener see (Crustacea: Anostraca, Notostraca und Diplostraca). Abhandlungen und Berichte für Naturkunde 36: 189-201.
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