The Eurasian lynx (Lynx lynx) is a medium‐sized felid, with a tendency to hunt for prey larger than itself. We studied the lynx hindlimb musculoskeletal anatomy in order to determine possible anatomical adaptations to hunting large prey. In our previous work we had found characters of both large and small felids in the lynx forelimb. The crouched limbs, typical of all felids, increase the energy demands

Turtles are characterized by their typical carapace, which is primarily composed of corneous beta proteins in the horny part and collagen in the dermal part. The formation of the extracellular matrix in the dermis of the carapace in a hard‐shelled and a soft‐shelled turtle has been compared. The study examines carapace development, with an emphasis on collagen accumulation, in the soft‐shelled turtle

During embryogenesis, teleost females do not develop Müllerian ducts, which form the oviducts in all other vertebrates. Thus, when they reach sexual maturity they do not have oviducts. In viviparous teleosts, the lack of oviducts means that the development of the embryos occurs as an intraovarian gestation, unique among vertebrates. The ovary is an unpaired hollow organ whose cavity is continuous with

The precopulatory behaviour of the larviform females of Ripidius quadriceps Abeille de Perrin, 1872 is described. The calling posture of virgin females is documented. The cephalic morphology and microstructures are visualized using scanning electron microscopy, in particular the secretory pores in the cuticle of inflatable maxillary palps. An exhaustive overview of relevant publications revealed that

We provide up‐to‐date morphological and compositional data on otoliths of the osteoglossomorph Goldeye (Hiodon alosoides). Using computed tomography (CT) X‐ray, we documented the location of each of the three pairs of otoliths (lapilli, sagittae, and asterisci) in relation to the swim bladder, which extended forward in close proximity to the sagittae and asterisci. The lappili were the largest otoliths

The elimination of the spermatid cytoplasm during spermiogenesis enables the sperm to acquire a streamlined architecture, which allows for unhindered swimming. While this process has been well described in vertebrates, it has rarely been reported in invertebrates. In this study, we observed the process of cytoplasm elimination during spermiogenesis in Octopus tankahkeei (Mollusca, Cephalopoda) using