Results 81 to 90 of about 1,128 (190)

Der rest eines actinolepididen placodermen (Pisces) aus der bohrung bolland (emsium, Belgien) [PDF]

open access: yes, 1976
A small arctolepidid arthrodire of the subfamily Actinolepidinae is described f r om the Lower Emsium of the drilling Bolland near Liege/Belgium. The new genus resembles most A ctinolepis but differs from that genus and other Actinolepidinae in the shape
Schmidt, W.
core  

A Gigantic Sarcopterygian (Tetrapodomorph Lobe-Finned Fish) from the Upper Devonian of Gondwana (Eden, New South Wales, Australia)

open access: yes, 2015
Edenopteron keithcrooki gen. et sp. nov. is described from the Famennian Worange Point Formation; the holotype is amongst the largest tristichopterids and sarcopterygians documented by semi-articulated remains from the Devonian Period.
Dunstone, Robert L.   +3 more
core   +1 more source

Ambient inclusion trails in Palaeozoic crustaceans (Phosphatocopina and Ostracoda) [PDF]

open access: yes, 2016
Hollow microtubular structures with pyrite grains at their termini have been found in phosphatocopines (Hesslandona toreborgensis and Hesslandona cf.
Olempska, Ewa, Wacey, David
core   +2 more sources

The effects of lecture speed and note‐taking on memory for educational material

open access: yesApplied Cognitive Psychology, Volume 38, Issue 1, January/February 2024.
Abstract The use of pre‐recorded lecture videos as a primary mode of instruction during online learning has allowed students flexibility in how they self‐regulate their learning. Although increasing lectures up to 2x speed has little cost on memory, it is unknown whether note‐taking at increased speeds interacts with memory.
Ashley Chen   +4 more
wiley   +1 more source

Hyperossification in the vertebral column of Devonian placoderm fishes (Arthrodira)

open access: yesJournal of Vertebrate Paleontology, 2020
Skeletal bone enlargement (hyperossification) was thought to only occur in endochondral and dermal bones (e.g., endoskeletons of marine tetrapods and dermal bones of certain jawless vertebrates, placoderms, and teleost fishes). However, in some arthrodiran placoderms (basal jawed vertebrates), i.e., Millerosteus minor, Compagopiscis croucheri ...
van Mesdag, S.   +3 more
openaire   +2 more sources

New morphological information on, and species of placoderm fish Africanaspis (Arthrodira, Placodermi) from the Late Devonian of South Africa.

open access: yesPLoS ONE, 2017
Here we present a new species of placoderm fish, Africanaspis edmountaini sp. nov., and redescribe Africanaspis doryssa on the basis of new material collected from the type locality of Africanaspis.
Robert W Gess, Kate M Trinajstic
doaj   +1 more source

Fossil constraints on the origin and evolution of Platyhelminthes are surprisingly concordant with modern molecular phylogenies [PDF]

open access: yesZoologia (Curitiba)
Trace fossils preserved with fossil worm-shaped remains suggest the presence of free-living flatworms during the Ordovician at the latest and their occurrence in terrestrial environments during the Permian.
Kenneth De Baets   +7 more
doaj   +1 more source

Mammal Magic [PDF]

open access: yes, 1988
A curious linguistic phenomenon that has received little attention in recent years is the fact that you can take an ordinary English word, add a letter of your choice to it, scramble all of the letters, and produce the name of some mammal.
Borgmann, Dmitri A.
core   +1 more source

Bioerosion in the Late Devonian placoderm remains from the Holy Cross Mountains, Poland

open access: yesActa Palaeontologica Polonica
We report the first occurrence of trace fossils in placoderm bones from the Upper Devonian of the Holy Cross Mountains. A taxonomic analysis of three ichnogenera revealed the earliest evidence of Sulculites (ie., Sulculites bellus), characterised by ...
Patrycja G. Dworczak   +2 more
doaj   +1 more source

A new osteichthyan from the late Silurian of Yunnan, China.

open access: yesPLoS ONE, 2017
Our understanding of early gnathostome evolution has been hampered by a generally scant fossil record beyond the Devonian. Recent discoveries from the late Silurian Xiaoxiang Fauna of Yunnan, China, have yielded significant new information, including the
Brian Choo   +5 more
doaj   +1 more source

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