Results 61 to 70 of about 1,490 (199)

Is Onychodontida (Osteichthyes, Sarcopterygii) monophyletic? Assessing discordant phylogenies with quantitative comparative cladistics

Spanish Journal of Palaeontology, 2022
Onychodontida (Osteichthyes, Sarcopterygii) was an extinct group of Devonian predatory marine fishes, representing an early branch in sarcopterygian evolution, and currently considered closely related to coelacanths (Actinistia). Due to their limited fossil record, the relationships of onychodonts within sarcopterygians, and whether all taxa ...
Ciudad Real, Maria, Mondéjar-Fernández, Jorge, Vidal, Daniel, Botella, Héctor   +3 more
openaire   +2 more sources

A New Tristichopterid (Pisces, Sarcopterygii) from the Devonian of Latvia

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences., 2008
A New Tristichopterid (Pisces, Sarcopterygii) from the Devonian of Latvia A new species of tristichopterid sarcopterygians, Eusthenopteron kurshi, sp. nov., the earliest representative of the family reported to this date from the territory known as the Main Devonian Field, is described from the well-known fossil locality of Latvia, the Lode ...
openaire   +3 more sources

SARCOPTERYGII DO TOPO DA FORMAÇÃO TATUÍ E BASE DA FORMAÇÃO IRATI, PERMIANO, SÃO PAULO, BRASIL

, 2011
Restos de Sarcopterygii são descritos aqui de duas unidades do Permiano da Bacia do Paraná, Formação Tatuí e Membro Taquaral. O Membro Taquaral, da Formação Irati, recobre sedimentos da Formação Tatuí.
Chahud, Artur, Petri, Setembrino
core   +1 more source

Ceratodus tunuensis, sp. nov., a new lungfish (Sarcopterygii, Dipnoi) from the Upper Triassic of central East Greenland [PDF]

, 2018
SFRH/BD/99580/2014The fossil record of post-Paleozoic lungfishes in Greenland is currently restricted to a few brief reports of isolated and undetermined tooth plates coming from the uppermost Fleming Fjord Formation (late Norian) in Jameson Land ...
Mateus, Octávio, Clemmensen, Lars B., Milàn, Jesper, Adolfssen, Jan Schulz, Jesper Milàn, Agnolin, Federico L., Jan Schulz Adolfssen, Agnolin, Federico, Octávio Mateus, Lars B. Clemmensen, Wings, Oliver, Marzola, Marco, Federico L. Agnolin, Oliver Wings, Clemmensen, Lars B, Marco Marzola   +15 more
core   +1 more source

The giant cretaceous Coelacanth (Actinistia, Sarcopterygii) Megalocoelacanthus dobiei Schwimmer, Stewart & Williams, 1994, and its bearing on Latimerioidei interrelationships. [PDF]

PLoS ONE, 2012
We present a redescription of Megalocoelacanthus dobiei, a giant fossil coelacanth from Upper Cretaceous strata of North America. Megalocoelacanthus has been previously described on the basis of composite material that consisted of isolated elements ...
Hugo Dutel, John G Maisey, David R Schwimmer, Philippe Janvier, Marc Herbin, Gaël Clément   +5 more
doaj   +1 more source

Linking geographic distribution and niche through estimation of niche density

Journal of Animal Ecology, Volume 94, Issue 6, Page 1221-1230, June 2025.
Species with larger climatic tolerances (niches) may have large or small geographic ranges, dependent on the commonness of favourable climatic conditions across geographic space. Here, we explore the relationship between geographic range size and niche area, while also proposing a novel measure of niche density.
Tad A. Dallas, Cleber Ten Caten
wiley   +1 more source

The research history of the Middle Triassic fishes of Monte San Giorgio: getting out of the shadow of aquatic reptiles

Swiss Journal of Palaeontology
Around the middle of the nineteenth century, Italian palaeontologists began to investigate fossils of fishes and reptiles from the Middle Triassic outcrops in the vicinity of Monte San Giorgio (Canton Ticino, Switzerland).
Toni Bürgin
doaj   +1 more source

Developmental sequence of the chondrocranium in the obligate carnivorous larvae of Lepidobatrachus laevis (Amphibia: Ceratophryidae)

The Anatomical Record, Volume 308, Issue 1, Page 26-44, January 2025.
Abstract The vertebrate head and its skull represent a significant innovation that has played a key role in the evolutionary and ecological success of vertebrates. For a global and integral understanding of the evolution of the head skeleton, it is essential to have reliable information on the development of chondrocranium in a wide range of vertebrate
Sebastián Hernández‐Nieto, Janine M. Ziermann‐Canabarro, Paul Lukas   +2 more
wiley   +1 more source

Figure 25 in The comparative osteology and phylogenetic relationships of African and South American lungfishes (Sarcopterygii: Dipnoi)

, 2015
Figure 25. Left squamosal of Protopterus annectens, AMNH 22455: A, lateral view; B, dorsal view. Anterior is to the left. Scale bar: 5 mm. SQac, articular condyle of the squamosal.Published as part of <i>Criswell, Katharine E., 2015, The ...
Criswell, Katharine E.
core   +1 more source

The relationship between the secondary vascular system and the lymphatic vascular system in fish

Biological Reviews, Volume 99, Issue 6, Page 2108-2133, December 2024.
ABSTRACT New technologies have resulted in a better understanding of blood and lymphatic vascular heterogeneity at the cellular and molecular levels. However, we still need to learn more about the heterogeneity of the cardiovascular and lymphatic systems among different species at the anatomical and functional levels.
Virginia Panara, Zuzana Varaliová, Jörg Wilting, Katarzyna Koltowska, Michael Jeltsch   +4 more
wiley   +1 more source