Results 281 to 290 of about 4,446,595 (349)

Small fish, large variation: Morphological diversity of Weberian apparatus in Noturus catfishes and ecological implications

The Anatomical Record, EarlyView.
Abstract The Weberian apparatus is a hearing specialization unique to the otophysan fishes, and an unexpected degree of morphological variation exists in species of the Noturus catfishes. Our aim in this study is to investigate relationships between morphological variations and ecology that may drive this variation.
J. C. Hoeflich, Juan Liu
wiley   +1 more source

Two names, one species: redescription and phylogenetic position of Schrankiana formosula Freitas, 1959 provides new insights into the evolutionary history of the Cosmocercidae. [PDF]

Parasitology
Félix AJS, Trindade LFF, Rebêlo GL, Neves JKS, Santos AN, Maldonado Júnior A, Costa-Campos CE, Santos JN, Melo FTV.   +8 more
europepmc   +1 more source

The phylogenetic position of the Aeolosomatidae and Parergodrilidae, two enigmatic oligochaete-like taxa of the 'Polychaeta', based on molecular data from 18S rDNA sequences

, 2002
Torsten H. Struck, René Hessling, Günter Purschke   +2 more
openalex   +1 more source

Is cranial anatomy indicative of fossoriality? A case study of the mammaliaform Hadrocodium wui

The Anatomical Record, EarlyView.
Abstract Determining the ecology of fossil species presents considerable challenges due to the often fragmentary preservation of specimens. The mammaliaform Hadrocodium wui from the Jurassic of China is known only from the cranium and mandible but may have had a fossorial lifestyle.
Molly Tumelty, Stephan Lautenschlager
wiley   +1 more source

Origin and phylogenetic position of the Lesser Antillean species of Bothrops (Serpentes, Viperidae): biogeographical and medical implications

, 2002
Wolfgang Wüster, Roger S. Thorpe, Maria da Graça Salomão, Laurent Thomas, Giuseppe Puorto, R.D.G. Theakston, David A. Warrell   +6 more
openalex   +2 more sources

Morphology and function of pinniped necks: The long and short of it

The Anatomical Record, EarlyView.
Abstract Terrestrial vertebrates from at least 30 distinct lineages in both extinct and extant clades have returned to aquatic environments. With these transitions came numerous morphological adaptations to accommodate life in water. Relatively little attention has been paid to the cervical region when tracking this transition.
Justin Keller, Annalisa Berta, Mark Juhn, Blaire Van Valkenburgh   +3 more
wiley   +1 more source

Ancient Endemic or Recent Invader? Phylogenetic Position and the Probable Origin of the Ccladoceran Diaphanosoma macedonicum (Diplostraca, Sididae) from the Ancient Lakes in the Balkans. [PDF]

Zool Stud
López-Blanco C, Tasevska O, Kostoski G, Vicente E, Epp LS, García-Alix A.   +5 more
europepmc   +1 more source

The morphology of the oval window in Paranthropus robustus compared to humans and other modern primates

The Anatomical Record, EarlyView.
Abstract The oval window (OW) is an opening connecting the inner and middle ear. Its area has been shown to consistently scale with body mass (BM) in primates, and has been used alongside semi‐circular canal (SCC) size to differentiate Homo sapiens and fossil hominins, including Paranthropus robustus.
Ruy Fernandez, José Braga
wiley   +1 more source

Morphology and Phylogenetic Position of the Sargassum Nudibranch Scyllaea fulva Quoy & Gaimard, 1824 (Nudibranchia: Scyllaeidae): First Record in Hong Kong. [PDF]

Zool Stud
Yiu SKF, Leung TK, Lee GY, Yan M.
europepmc   +1 more source

But how does it smell? An investigation of olfactory bulb size among living and fossil primates and other euarchontoglirans

The Anatomical Record, EarlyView.
Analysis of cranial endocast data of 181 extant and 41 fossil species from Euarchontoglires shows that there was a reduction in olfactory bulb size in Crown Primates, but that there were also subsequent reductions in various other primate clades (Anthropoidea, Catarrhini, Platyrrhini, crown Cercopithecoidea, Hominoidea).
Madlen Maryanna Lang, Mary Teresa Silcox, Łucja Fostowicz‐Frelik, Adam Lis, Sergi López‐Torres, Gabriela San Martin‐Flores, Ornella C. Bertrand   +6 more
wiley   +1 more source