Latest posts tagged with #Ichnology on Bluesky
An ichnofossil: Ordovician trilobite trackways, preserved as locomotion traces on the ancient sea floor.
Unlike body fossils, these are trace fossils recording behavior rather than anatomy.
#ichnofossil #Rusophycus #trilobite #ichnology #fossils #geology
My wife and kids
Traces of rodents in the snow.
Traces of rodents in the snow.
Traces of rodents in the snow.
Undersnow traces of rodents exposed during our family walk in the forest near Vilnius.
#Ichnology
For those working on #tracks / #footprints / #ichnology, I've made a neat little addon for #blender that aligns a mesh to the horizontal at z=0 based on a few points. Open and up on github:
github.com/pfalkingham/...
The beauty of avian-dinosaur life traces in snow, with similar traces having been made over the past 100+ million years, but with none lasting more than a few days. #ichnology 🧪🐦🐾
Wow indeed! I'm trying to remember if any leaf-mining traces were in Carboniferous leaves, But to have mining that's host-specific as an adaptation in the Early Permian is significant regardless. Thanks for posting! #ichnology 🧪🌿🪲🕳️
From paper: Late Triassic leaf-mine fossil on Cladophlebis denticulata of the Momonoki Formation, Yamaguchi, Japan. (A) Specimen (MMHF11-00001a), on which mines on pinnules and chewing marks are marked with white arrowheads and yellow asterisks, respectively, and (B) its counterpart (MMHF11-00001b), at approximately the same scale. (C) Enlargement of pinna with three mines; orange arrowheads signify putative starting point (i.e., oviposition site) of leaf-mines; however, the starting point of the mine on the right is unseen. (D) Enlargement of two pinnules shows the transition of the frass trail, suggesting larval development while mining, and (E) its counterpart at the same scale. Arrowheads in orange and blue denote an oviposition site (os) and possible pupal chamber (pc), respectively.
2022: Oldest leaf mine trace fossil from East #Asia provides insight into ancient nutritional flow in a plant–herbivore interaction
#ichnology #paleobotany #palaeobotany
Yume Imada, Nozomu Oyama, Kenji Shinoda, Humio Takahashi & Hirokazu Yukawa
From paper: Co-occurrence of endophytic oviposition and Asteronomus maeandriformis in Autunia conferta. (a) Mass occurrence of oviposition scars, which likely housed unhatched eggs (NHMS Ap 37/5). (b) Sketch of (a) showing the distribution of the oviposition scars on the pinnule. (c–e) Oviposition scars with ovipositor slits (arrows) (NHMS Ap 37/5). (f) Oviposition and leaf mining on small Autunia conferta pinnules (MB.Pb.1979/0012). (g) Enlargement of the area in (f). Note the callus tissue surrounding the oviposition sites. (h) Leaf mines and oviposition scars on Autunia conferta (MB.Pb.1979/0014). (i) Irregularly distributed oviposition scars on Autunia conferta (MB.Pb.1979/0020).
From paper: Thin sections of Asteronomus maeandriformis in Autunia conferta from Crock, Thuringian Forest Basin, Germany. (a) Section through an Autunia conferta leaf (MB.Pb.1979/0188) with frass trail (box). The scrolled margins indicate the upper side of the pinnule. (b) Section through the frass trail in (a). Note the upper epidermis (arrow), which covers the tunnel. (c) Another example of a compressed tunnel in the upper parenchyma covered by the upper epidermis (arrow) (MB.Pb.1979/0179). (d) Transverse and longitudinal sections through endophytic frass trails in Autunia conferta (MB.Pb.1979/0188). (e, f) Longitudinal section through a frass trail (MB.Pb.1979/0069). Note the calcite-filled cracks and the thin calcite cover on the upper side of the leaves from shrinkage of the organic matter in (arrows in f).
Wow!
2025: Host-specific leaf-mining behaviour of holometabolous insect larvae in the early #Permian
#ichnology #paleobotany #palaeobotany
Michael Laaß, Ludwig Luthardt, Steffen Trümper, Angelika Leipner, Norbert Hauschke & Ronny Rößler
Precharting day, so Squirrel Brain gets to watch movies whilst I work!
"Wolf of Snow Hollow" was first.
I'm undecided.
#ichnology at the beginning that was wrong enough to actually works with the plot.
Plot dances around misogyny, looking it dead in the eyes & then waltzing on by w/out recourse.
Paper on Early Permian scale impressions (of bolosaurian reptiles). It is difficult ard to interpret a tissue origin from imprints but it is most likely dermal indeed 🦎 #paleontology #fossilskin #softtissues #ichnology #footprints #scales
www.cell.com/current-biol...
Another stem-mammal trackway from the Hopeman sandstones. Numbering, lower left, means this block will soon be off to Sagrada Familia, Barcelona, warmer than Moray! #ichnology #permian
Photo of tracks in snow
We had a visit from a bobcat. Unfortunately, I didn't see it, but these may be the tracks. I tweaked the photo to make them more visible. #ichnology
Rock slab with 6 well-defined footprints, three groups of two tracks almost on top of each other, in a display case.
Close up of those footprints, which have four digits and a small 'palm' beneath them.
Tetrapod tracks at the Yale Peabody. #ichnology and belated #FossilFriday
From the display sign: Baropus lentus, 307 to 299 million yrs ago, #Kansas
Trace fossils FTW again! Earliest known (300+ mya) evidence from Germany of scaled skin in reptiles from body impressions with tracks, includes imprint of a cloacal vent (probably SFW because it's a trace fossil). 🧪🐾🦎 #ichnology
132-million-year-old dinosaur tracks could solve ‘dark period’ puzzle in African history. This discovery “solves” the puzzle by proving dinosaurs returned or persisted after the disaster. interestingengineering.com/science/132-... #Ichnology #palaeontology #science #SciChat
Mary Buckland: The Invisible Hand Behind the Dinosaur
voxmeditantis.com/2026/01/27/m...
#WomenInSTEM #STEM #Palaeoart #Ichnology #Fossilist
Including tracks that "likely represents one of the earliest known pterosaur track records in #China"! Wow! #ichnology
Instant recognition of tracks from the Beneski Museum at Amherst College! #ichnology
A series of blockdiagrams illustrating the development (from the phase 1 to phase 3) of the Ploužnice Lake as interpreted from the studied sections (Kyje–Ploužnice railway cut, Štikov roadcut) and data on the Ploužnice Horizon by Blecha et al. (1997). The alternation of wet and dry climate phases that controlled the extent of the Ploužnice Lake, has already been interpreted from contemporaneous deposits of the Líně Formation in central Bohemia (Nádaskay et al., 2025). Close-ups provide a detailed interpretation of the depositional environment in which the trackmakers roamed and left their trace fossils.
A highly diverse Pennsylvanian #tetrapod ichnoassemblage from the Semily Formation (Krkonoše Piedmont Basin, Czechia)
peerj.com/articles/204...
@peerj.bsky.social #ichnology #paleontology #paleobiology
Snow with paired small prints, looking hoppy, in a straight line, toonie for scale.
Closer view of paired hoppy track with four arrows pointing to a curved swooping drag mark to the left (3) and right (1) of the paired footprints, with toonie for scale. Paired footprints abot the same width of toonie.
Closer view of paired hoppy track with two arrows pointing to a curved swooping drag mark to the left of the paired footprints, with toonie for scale. Paired footprints abot the same width of toonie.
While I catch up after [waves arms at everything], here's the 1st #NameThatTrack of 2026, the Premier (according to Ash) #ichnology game! I post a pic, you use your tracking skills to answer Qs!
Found next to our compost bin in south BC, arrows pointing to an adorable clue! Answer tomorrow at 12pm!
@lisavipes.bsky.social would know, I bet! I sound the #Ichnology Signal!
A snowy driveway with little "v" s of forepaws and hind paws with large spaces between them. The prints are about 4 inches on each side of the "V" and have about 1 1/2 feet of space between them.
Hey trackers, who is this?
#ichnology
Somebody has been leaping through the snow.
Aeolian deposit, Hopeman Sandstone Formation. Remarkable how much detail of very small Permian reptilian footprints can be preserved in a damp siltstone substrate. #Ichnology #Permian
Thrilled to join the Ichnology & Palaeoenvironment RG @ichnougr.bsky.social ! 🎉
Just started my PhD at @universidadgranada.bsky.social
Working on 8 Myr of Mediterranean climate using trace fossils & geochemistry, orbital precession cycles + Messinian Salinity Crisis 🌊🔬
#Ichnology #Paleoclimate
An enlightening essay in @theconversation.com by Benoit, Helm, & Bordy about the recognizing Indigenous science for its important role in the original discoveries of fossils in southern Africa, especially trace fossils (tracks). 🧪🐾🪨⚒️🌍 #ichnology
Super late #FossilFriday #CretaceousCrossroads exhibit! Now you don't see it, now you do! #ichnology, #tracefossils #paleontology 75 million year old crab tracks from the Two Medicine Formation!
Dinosaur footprint or track of an Eubrontes, Gigandipus, or Dilophosaurus on original matrix or rock showing added staining to show clarity.
A dinosaur footprint of the ichnotaxon Eubrontes giganteus from the East Berlin Formation in Connecticut, USA. This Jurassic aged ichnogenus is possibly from Dilophosaurus or a similar species. #FossilFriday
#dinosaur #fossil #ichnology #paleontology #eubrontes #gigandipus #dilophosaurus #theropod
2 tracks in Hopeman Sandstone Formation, Elgin, Scotland. Small Permian reptile trackway overidden by larger reptile. Same day, same morning?, big animal chasing the smaller one?? #ichnology #permian
GORGEOUS artwork by Guilherme Gehr.
#ichnology #Brasil
For #FossilFriday, walking with dinosaurs ~100 million years too late at the Davenport Ranch dinosaur tracksite (1st documented in 1940), near Bandera TX on a @geosociety.bsky.social pre-meeting field trip just 2 weeks ago. Tracks show evidence of herding sauropods & big theropods. 🧪🪨⚒️🦖🦕🐾 #ichnology
