The Eocene history of cetacean evolution is now represented by the expansive fossil record of archaeocetes elucidating major morphofunctional shifts relating to the land to sea transition, but the change from archaeocetes to modern cetaceans is poorly established. New fossil material of the recently recognized family Eomysticetidae from the upper Oligocene Otekaike Limestone includes a new genu...

The aim of the present study was to quantify the distribution of the elastic fiber system within the wall of the anterior cerebral artery. The study is based on the works of Glynn (1940) and Stehbens (1989) concerning the incidence and origin of brain aneurysms and recent studies of the elastic fibers. The anterior cerebral artery was divided into three segments, S1, S2 and S3: S1 corresponds t...

Aphelenchoides fuchsi sp. n. is described and illustrated from bark and wood samples of a weakened Mondell pine in Kermanshah Province, western Iran. The new species has body length of 332 to 400 µm (females) and 365 to 395 µm (males). Lip region set off from body contour. The cuticle is weakly annulated, and there are four lines in the lateral field. The stylet is 8 to 10 μm long and has small...

Penelitian ini bertujuan untuk mengetahui tingkat pengetahuan nelayan pesisir Wendu tentang ikan pari gergaji. dilakukan pada bulan Juni 2021-Maret 2022. Sampel dalam penelitian sebanyak 92 orang, menggunakan metode non-probability sampling. Jenis sampling yang digunakan adalah purposive Teknik analisis data dengan mengkombinasikan kuantitatif dan kualitatif. Rata-rata terhadap habitat mencapai...

Metamasius planatus and Melchus jessae, are described and illustrated from the Lesser Antilles islands of Dominica and St. Lucia.  Metamasius planatus (Dominica) is distinguished by a relatively flat profile and presence of dense, very fine, golden micropilosity covering most of the dorsal surface.  Melchus jessae (Dominica and St. Lucia) is the sixth species known in the genus and is distingui...

The early Miocene is one of the least understood intervals in cetacean evolution. A new early Miocene dolphin described here, Papahu taitapu, gen. et sp. nov. (family incertae sedis, Cetacea, Odontoceti), is from the Kaipuke Formation (21.7–18.7 Ma) of North West Nelson, New Zealand. The holotype of Papahu taitapu includes a skull with an open mesorostral canal, a broad-based rostrum (broken an...

The sagitta of Kurtus gulliveri was ovate, moderately thick with the following attributes: lateral surface convex, mesial surface flat; dorsal margin sinuate, posterior margin rounded ventrally, ventral margin rounded and irregular; sulcus divided into ostium and cauda by constriction of dorsal and ventral margins, heterosulcoid, colliculum heteromorph; dorsal depression large and distinct, ven...

Increasingly, drone-based photogrammetry has been used to measure size and body condition changes in marine megafauna. A broad range of platforms, sensors, altimeters are being applied for these purposes, but there is no unified way predict photogrammetric uncertainty across this methodological spectrum. As such, it difficult make robust comparisons studies, disrupting collaborations amongst re...

Andranthobius setirostris sp. nov. is the first species of Andranthobius Kuschel described from the Amazon. It is distinguished from other species within the genus by an anterior obtuse tubercle on the lateral margin of the pronotum, the rostrum of the males with a lateroventral row of tubercles and comb of setae, and a much larger body. Adult specimens were originally collected in flowers of t...