Results 191 to 200 of about 33,062 (329)

Differences in extinction selectivity and their relationship to functional traits in late Cenozoic mollusks. [PDF]

PeerJ
Rojas-Ariza D, Strotz LC, Lieberman BS.
europepmc   +1 more source

Assessing the microstructure of simple rhamphothecae in chickens (Aves: Galliformes: Gallus gallus domesticus)

Journal of Anatomy, EarlyView.
Simple rhamphotheca are externally homogeneous but internally are composed of several corneous layers with varying hardness. Areas under more mechanical stress such as the rostral portion and the tomia are significantly harder than other areas. Abstract Corneous sheaths on the jaws of beaked tetrapods, or rhamphothecae, are classified as simple or ...
Khanh H. T. To, Michelle R. Stocker, Tobin L. Hieronymus   +2 more
wiley   +1 more source

Retraction Note: Lateral palatal foramina do not indicate baleen in fossil whales. [PDF]

Sci Rep
Peredo CM, Pyenson ND, Uhen MD.
europepmc   +1 more source

Paleobiology of the Dinosaurs [PDF]

, 1989
openaire   +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, Ben T. Kligman, Maranda L. Stricklin   +2 more
wiley   +1 more source

Range-weighted branch length difference (RWiBaLD), a new method for distinguishing meso-endemism from neo-endemism and paleo-endemism. [PDF]

PLoS One
Mishler BD, Knerr N, Miller JT, Thornhill AH, Laffan SW.   +4 more
europepmc   +1 more source

The variability of giraffe skull morphology

Journal of Anatomy, EarlyView.
What does giraffe skull shape tell us about their development and evolution? Abstract Giraffe (Giraffa spp.) are among the most unique and charismatic extant animals, largely due to their distinct morphology. The evolutionary and developmental origin of ossicones is a key factor in giraffid biology, yet other features building their characteristic head
Nikolaos Kargopoulos, Jesús Marugán‐Lobón, Anusuya Chinsamy‐Turan, Bernard R. Agwanda, Michael Butler Brown, Stephanie Fennessy, Sara Ferguson, Rigardt Hoffman, Fredrick Lala, Arthur Muneza, Ogeto Mwebi, Moses Otiende, Alice Petzold, Sven Winter, Abdoul Razack Moussa Zabeirou, Julian Fennessy   +15 more
wiley   +1 more source

Case Report: Neuropsychiatric improvement after treatment of pelvic venous disorder in a multisyndromic patient. [PDF]

Front Cardiovasc Med
Smith SJ, Sichlau MJ, Rowe PC, Knight DRT, Chen B, Smith BH, Sichlau IC.   +6 more
europepmc   +1 more source

Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs

Journal of Anatomy, EarlyView.
Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical appraisal of purported external and internal evidence for caudal vertebral PSP in Sauropodomorpha.
Samantha L. Beeston, Daniela Schwarz, Paul Upchurch, Stephen F. Poropat, Patrick Asbach, Philip D. Mannion   +5 more
wiley   +1 more source

Specialty Grand Challenge in Paleontology

Frontiers in Earth Science, 2015
Robert eReisz, Hans-Dieter eSues
doaj   +1 more source