Reposted by @morena99.bsky.socialSystematics and Evolution of Spiders and its Allies @spidersysevo.bsky.social · 20/05/2025The 2025 edition of the #SPIDCHANGE! The tour is on. First plot, the cork oak wood near Getaria check! @marnedo.bsky.social @mmarqbio.bsky.social @jmalumbresolarte.bsky.social @morena99.bsky.social 063
morena99.bsky.social @morena99.bsky.social · 27/01/2025I couldn't have had a better guide and inspiration 💚 010
morena99.bsky.social @morena99.bsky.social · 27/01/2025@sabifo4.bsky.social @russellgarwood.co.uk @phil-donoghue.bsky.social 000
morena99.bsky.social @morena99.bsky.social · 27/01/20255- This study calls for exploration of new fossil sites to uncover their hidden history. Fossils of sea spiders might be found in different ecological settings, possibly rewriting their history once again. Keep an eye on this fascinating arthropods! 140
morena99.bsky.social @morena99.bsky.social · 27/01/20254- The pycnogonid crown group (=Pantopoda) preceeds the appearance of the first pantopod fossil by ~206.5 Ma. Why this hole in the fossil record? Sea spiders have fragile, low-fossilization bodies and likely lived in environments unsuitable for fossil preservation. #FossilRecord #Paleontology 150
morena99.bsky.social @morena99.bsky.social · 27/01/20253- We traced the split of major sea spider families between the Devonian and Jurassic. 140
morena99.bsky.social @morena99.bsky.social · 27/01/20252- We found out that Pycnogonida diverged from the rest of the chelicerates during the Cambrian (~539-510 million years ago) while modern sea spiders (order: Pantopoda) took another 100 million years and appeared between the Silurian and the Devonian (~435-367 mya). #CambrianExplosion 1174
morena99.bsky.social @morena99.bsky.social · 27/01/20251- We dove deep into the evolutionary history of sea spiders, using molecular data (13 mitochondrial protein-coding genes, 18S rRNA and 98 UCEs) from 198 species and fossils to pinpoint when this group emerged and diversified. #EvolutionaryBiology 160
morena99.bsky.social @morena99.bsky.social · 27/01/2025Sea spiders (Pycnogonida) are an ancient Class of chelicerates with a fascinating evolutionary tale. A new study we just published on the EJLS uncovers their evolutionary history! 🧵 #Evolution #TheLinneanSociety #SeaSpiders #Arthropoda academic.oup.com/evolinnean/a...academic.oup.comA timescale for the evolutionary history of sea spiders (Arthropoda: Pycnogonida)Abstract. Sea spiders (Arthropoda: Pycnogonida) are an ancient lineage of chelicerates represented by a single living order, Pantopoda, and a patchy fossil 32812
