Journal of Fish Biology, EarlyView.Abstract A new species of Characidium is described from a small, isolated river in the highland areas of Noel Kempff Mercado National Park, Bolivia. The new taxon can be diagnosed by the presence of a relatively broad and conspicuous dark midlateral stripe extending from the tip of snout to the base of the caudal fin, markedly darker than the vertical ...
Leonardo Oliveira‐Silva +3 more
wiley +1 more source
New Paleogene records of cartilaginous fishes (Chondrichthyes) from central Chile, including the oldest lamnid diversity from the southeastern Pacific. [PDF]
PeerJOtero RA.
europepmc +1 more source
Journal of Anatomy, EarlyView.Fossil finds from three Middle Miocene sites in Poland reveal the northernmost known presence of trionychid turtles in Europe, tentatively identified as Trionyx cf. vindobonensis, suggesting a warmer climate that supported thermophilic species in Central Europe during this period. Abstract Modern trionychids (Testudines, Cryptodira) have a pan‐tropical
Yohan Pochat‐Cottilloux +5 more
wiley +1 more source
Quantifying the Microscopic Distribution of Different Fluid Types in the Multiscale Pore-throat Structure of the Chang 7 Reservoir in the Longdong Area, Ordos Basin. [PDF]
ACS OmegaFan Y +9 more
europepmc +1 more source
A bristle‐nosed Jurassic ray‐finned fish (Actinopterygii) bears true dermal odontodes on its snout
Journal of Anatomy, EarlyView.Teeth show extreme diversity, including tooth‐like dermal odontodes or “skin teeth” in many extant fishes. We describe the anatomy of enlarged tubercles on the snout of Redfieldius, an extinct early Jurassic fish. We found that the tubercles in Redfieldius are dermal odontodes that evolved independently from those of living species. Abstract Comparison
Jack Stack +2 more
wiley +1 more source
Research on Brazilian splitting mechanics and acoustic emission characteristics of various types of sandstones in Shendong mining area. [PDF]
Sci RepYang Z, Yue S, Zhang C, Yang D.
europepmc +1 more source
Journal of Anatomy, EarlyView.Bone tissues of Triassic taxa reveal life history signals consistent with climatic variation across southern Pangea, spanning present‐day Brazil, Argentina, Zimbabwe, and India. Slower growth patterns within the Zimbabwean assemblage suggest a comparatively more arid intracontinental environment than those closer to the coast. Artwork by Andrey Atuchin.
Valerie Trinidad +6 more
wiley +1 more source
Thermal, geological and biological processes shape the internal fabric and fluorescence of amber from La Cumbre, Dominican Republic. [PDF]
Sci RepNatkaniec-Nowak L +5 more
europepmc +1 more source
The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman
Journal of Petroleum Geology, EarlyView.ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi +4 more
wiley +1 more source
Mitigation of fine migration in low salinity water flooding of clay-rich sandstones Using Fe₃O₄/Saponin/Cu(II) nanocomposite. [PDF]
Discov NanoAttabi KAL +9 more
europepmc +1 more source