Results 91 to 100 of about 1,128 (190)

Some notes on a variability of Bothriolepidids (Placodermi, Antiarchi): unusual specimen of Livnolepis Heckeri (Luksevics) from the famennian of Tver region, European Russia

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
The fragment of the skull cap of placoderm Livnolepis heckeri (Luksevics) from the Bilovo Formation (Famennian, Upper Devonian) near the Bilovo Village of Tver Region has been described.
S. V. Moloshnikov, V. V. Linkevich
doaj   +1 more source

Systematic comparison and reconstruction of sea urchin (Echinoidea) internal anatomy: a novel approach using magnetic resonance imaging [PDF]

open access: yes, 2008
Background Traditional comparative morphological analyses and subsequent three-dimensional reconstructions suffer from a number of drawbacks. This is particularly evident in the case of soft tissue studies that are technically demanding, time-consuming ...
Mueller Susanne   +3 more
core   +2 more sources

Diversity and repertoire of IgW and IgM families in the newborn nurse shark [PDF]

open access: yes, 2004
Peer ...
Dooley, Helen   +3 more
core   +3 more sources

The sedimentary geology, palaeoenvironments and ichnocoenoses of the Lower Devonian Horlick Formation, Ohio Range, Antarctica [PDF]

open access: yes, 2002
Six ichnocoenoses in the clastic Devonian Horlick Formation (max. 56 m) confirm the nearshore marine character of eight of the nine lithofacies present.
Aitchison, JC, Bradshaw, MA, Newman, J
core   +1 more source

Devonian antiarch placoderms from Belgium revisited

open access: yes, 2015
ANR Program n° 2010 BLAN-607 “TERRES: Global perspectives on the terrestrialisation process”
openaire   +1 more source

Fossil evidence for a pharyngeal origin of the vertebrate pectoral girdle. [PDF]

open access: yesNature, 2023
Brazeau MD   +6 more
europepmc   +1 more source

The Paleozoic and Mesozoic vertebrate record of Venezuela: An overview, summary of previous discoveries and report of a mosasaur from the La Luna Formation (Cretaceous) [PDF]

open access: yes, 2018
Most reports of Paleozoic and Mesozoic vertebrates from Venezuela are anecdotical, with few detailed descriptions of mostly ‘fish' groups. Synapsids (e.g., mammals) are totally unknown, and dinosaurs are only reported from the La Quinta Formation.
Brinkmann, Winand   +2 more
core  

Histology and affinity of anaspids, and the early evolution of the vertebrate dermal skeleton [PDF]

open access: yes, 2016
The assembly of the gnathostome bodyplan constitutes a formative episode in vertebrate evolutionary history, an interval in which the mineralized skeleton and its canonical suite of cell and tissue types originated. Fossil jawless fishes, assigned to the
Bristol Doctoral College   +4 more
core   +3 more sources

Intra‐terrestrial aliens—Visualizing the bizarre cranial anatomy of the worm‐lizard!

open access: yes
The Anatomical Record, Volume 307, Issue 3, Page 533-534, March 2024.
Adam Hartstone‐Rose
wiley   +1 more source

Iowa Geological, January 1993, no. 18 [PDF]

open access: yes, 1993
This yearly report is informative in presenting short articles on the programs, projects, research and service carried on the the Survey this year. Providing you with enough basic information for our services that you will be able to utilize the Survey ...

core  

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