Shells of small (micromorphic) brachiopods are not so attractive as other fossils preserved in the white chalk facies…

In the Jurassic period, besides the well-known plesiosaurs and ichthyosaurs, there existed a third group of widely distributed large predatory marine reptiles…

Reconstruction of the Ocean surface water temperature based on calibration of many geochemical indicators from skeletons.

Vertebrate bones are rare in the Lower Triassic deposits of the Holy Cross Mountains.

… The specimen represents an exceptionally large individual, larger than the known representatives of Proterochersis robusta from the same formation…

Trachelosaurus, described over 100 years ago, turned out to be not a chimera…

Franconiasaurus brevispinus is a new early plesiosaur established based on two three-dimensionally preserved skeletons from the Lower Jurassic of Germany.

Bagaraatan ostromi is an enigmatic carnivorous dinosaur described from the Upper Cretaceous Nemegt Formation in Mongolia.

Many organisms exhibit astonishing biomineralization abilities, forming polymorphic minerals from the same chemical substance.

One of the basic taphonomic questions is whether the borings in skeletal structures were produced in vivo or post mortem.

Diadectomorpha was a group of large-bodied herbivorous tetrapods that existed from the late Carboniferous to the late Permian.

A new, rich vertebrate assemblage was discovered in the Middle Triassic strata of Miedary in southern Poland.

The mode of locomotion of one of the earliest free-living stalked echinoderms – Ordovician Pleurocystites belonging to the subphylum Blastozoa – was reconstructed.

During the Miocene salinity crisis, changing environmental conditions, including a sharp reduction in water exchange between the Mediterranean and the Atlantic Ocean, changed the geographic ranges of many organisms.

Turtles have a characteristic limb bone microstructure: the poorly vascularized tissue grows slowly throughout most of their life; in addition, there is no medullary cavity.

The paper deals with the anatomy of limbs and associated skeletal structures in the Triassic (c.a. 215 Myr) turtles belonging to the genus Proterochersis known from the territory of modern-day Germany and Poland.

Foraminifera (unicellular protists) from the Marquesas Keys, located 30 km west of Key West (Florida) allowed to reconstruct climatic conditions…

Lorrainosaurus from the Bajocian (Middle Jurassic) of France is the earliest large-bodied pliosaurid and the oldest known representative of a dynasty of marine reptile mega-predators…

The paper presents the results of histological studies of teeth of Late Jurassic fish from Owadów-Brzezinki.

Biomineralization of fish otoliths is regulated by macromolecules, such as proteins, whose presence is crucial for the functionality and properties of these mineralized structures.

Capacity of physiological modifications of the chemistry of the coral calcifying fluid that contains the molecules necessary for the formation of the skeleton…

The territory of Poland is mostly covered by sediments of glacial origin, which cover the Mesozoic rocks.

For the first time, the unusual phenomenon of graptolites growing on algae is observed.

Monospecific ostracod accumulations mainly within cephalopod (a nautiloid and two goniatites) phragmocones (siphuncle and camerae), are described from the Carboniferous of England.

Jurassic sediments of hydrocarbon seeps from La Elina Ranch (northern Patagonia) are the only source of information on this kind of environment in South America.

A Polish-Chinese research team described a new saurosphargid marine reptile from the Early Triassic of China (Hubei Province)…

About 140 million years ago, Poland was a sea connecting the Tethys Ocean with the Boreal Sea…

The Owadów-Brzezinki quarry is one of the most important paleontological sites in Poland…

Described in 1858, Trematospondylus macrocephalus from the Bathonian (Middle Jurassic) of Germany is one of the earliest established plesiosaur taxa.

The newly collected, very rich and well preserved material showed that previously wrongly attributed Eocene sponges from SW Australia…

The material of a carnivorous dinosaur found in the 1970s by a Polish-Mongolian paleontological expedition in the Gobi Desert is newly interpreted as belonging to the Shri devi species…

The latitudinal diversity gradient is one of the most extensive and important biodiversity patterns on the Earth.

Foraminifera, a group of unicellular organisms, are commonly used as bioindicators in paleoenvironmental studies. Unfortunately, their distribution in many key areas is poorly understood.

Shell ornamentation of marine calcifiers is considered as a potential anti-predatory defensive structure.

A new issue of Philosophical Transactions devoted entirely to mammalian skulls.

Dicynodonts were herbivorous synapsids – representatives of the tetrapod group encompassing mammals, their ancestors and relatives, but not reptiles.

The analysis of calyx sizes of fossil crinoids has shown that the mean calyx size significantly decreased during the periods of mass extinction…

Previously unidentified small phosphatic spines from the Devonian of the Holy Cross Mountains have been included into arrow worms (phylum Chaetognatha)

The oxygen isotopic compositions of fossil foraminifera tests constitute a continuous proxy record of deep-ocean and sea-surface temperatures spanning the last 120 million years.

A monographic description of 68 brachiopod species (three new, including one within a new genus), the most diversified faunal group in the Middle Devonian (Givetian) of Miłoszów in the Holy Cross Mountains.

Understanding the mechanisms of nucleation, stabilization and aggregation of amorphous calcium carbonate (ACC) and factors controlling its further transformation into crystalline phases is fundamental for elucidation of biogenic mineralization.

The Albian and Cenomanian (Cretaceous) deposits at Annopol in Central Poland have been famous for their wealth of phosphates and fossils.

It has been recently discovered that some species of modern starfish form a calcite skeleton with a triply periodic trabecular microstructure resembling the atomic structure of diamond,

The family Euphylliidae consists of reef-building scleractinian corals distributed across the Indo-Pacific.

The structure of the inner ear in mammals is highly informative with respect to locomotor agility and hearing sensitivity.

Tendons are elements connecting muscles and bones. In most vertebrates, they are flexible and elastic but in dinosaurs (including birds) some of them ossify.

Retiolitids are one of the group of graptolites with collagenous skeleton (rhabdosome) formed mostly by a network of lists.

Otoliths are calcium carbonate components of the inner ear in teleost fish.

The Owadów–Brzezinki palaeontological site is a new Jurassic taphonomic window.

Plateosaurus trossingensis is one of the largest herbivorous Late Triassic dinosaurs…

Formation of the biomineral structures in the inner ear (otoliths and smaller, but having the same function otoconia) is tightly linked to the formation of organic matrix framework, among which the
otolin-1, a short collagen-like protein, is one of its major components.

Foraminifera living in the fjords of South Georgia were studied…

A special issue of the Annales Societatis Geologorum Poloniae…

The material is composed of well-preserved isolated tracks, manus-pes couples, and a slab with trackways composed of approximately 20 tracks …

The Vossenveld Formation cropping out near Winterswijk in the Netherlands is well known because of its rich Middle Triassic marine reptile fauna assemblage…

The Upper Cambrian Słowińska Formation yielded minute three-dimensionally preserved, phosphatic microfossils.

Acta Societatis Botanicorum Poloniae, the journal of the Polish Botanical Society, founded in 1922, published a special collection of papers entitled Polish Botany Centennial.

Neoplasms are diseases that develop when body cells divide uncontrollably

Foraminifera and closely related gromiids dominate meiobenthos communities in polar regions…

Omphalosauridae are one of the most enigmatic groups of Mesozoic marine reptiles.

The description of the spicules’ shape and the skeleton organization represents the fundamental basis of sponge taxonomy and systematics.

Up to now, Mesozoic statoliths were known only from the Jurassic…

Morphometric analyses revealed that these thecae likely represent the same species…

A new genus and species of feather star is named Ausichicrinites zelenskyyi…

Siderite masses from the Miocene of Turów mine have been the subject of much controversy…

Traditional Caryophylliidae has been known as the most speciose scleractinian coral family…

We sequenced the first complete mitochondrial genome of the pygmy rabbit…

Very rare finding: a tree leaf overgrown by marine bryozoans…

Are archaeocyaths,so far classified as sponges, algae?

Ischyrodon meriani is an obscure pliosaurid taxon from the Middle Jurassic of Switzerland.

The assemblage that consisted of skeletal elements (spicules) of “soft” demosponges…

Permian deposits of the Boskovice Basin in the Czech Republic have yielded hundreds of seymouriamorph individuals (a group of extinct tetrapods).

Cryptic species pose a great challenge for the traditional taxonomy and estimates of the actual species diversity…

The Lower Oligocene rocky-shore deposits at Mammendorf, central Germany yielded a surprisingly rich brachiopod fauna, containing 13 species belonging to 11 genera.

60 species of Middle Devonian brachiopods are described from Jbel Issoumour (Anti-Atlas, Morocco).

Devonian crinoids from Holy Cross Mountains, including a new species – Codiacrinus sevastopuloi, were described.

A paper on ichnology of stalked crinoids are published…

Paleoclimate reconstructions commonly use oxygen isotope compositions from fossil foraminifera tests as proxies.

Sponges are important components of modern and fossil aquatic environments.

Borogovia gracilicrus is a theropod dinosaur from the uppermost Cretaceous of Mongolia. It was discovered during the 1971 Polish-Mongolian paleontological expedition to the Nemegt Basin.

Ornithischians represent one of the three major radiations of dinosaurs. Throughout their evolutionary history, exceeding 134 million years, ornithischians evolved considerable diversity…

The Late Triassic (ca. 225 million years ago) was an important period in the evolutionary history of ichthyosaurs, which saw the rise of their advanced ‘fish-shaped’ representatives.

Stable isotopes and predation marks shed new light on ammonoid habitat depth preferences

The results of new research on the giant siliceous basal spicule of the deep water sponge Monorhaphis chuni…

The authors described coralliths (unattached coral colonies passively rotated by water movement)…

The object of the paper is to show how using modern technology (neutron tomography, fluorescence) allows extracting more information…

The ammonoids are extinct cephalopods with predominantly planispirally-coiled shells. The term ‘heteromorph ammonoids’ is deeply rooted in literature to ecompass ‘aberrant’ ammonoids…

Polyps in different locations on individual stony coral colonies experience variation in numerous environmental conditions including flow and light…

Hydrothermal vent communities are associations of animals living in deep sea around sulphide chimneys. Their feeding strategies are based on chemosynthesis by microbial primary producers.

Senile dinosaurs are very rare in fossil record. The study is focused on the biggest specimen of Gobihadros mongoliensis.

The paper provides evidence of the coral-algal symbiosis among the Triassic (Carnian, ca. 230 Ma) corals living on the patch reefs of the Western Tethys (deposits currently exposed in the Dolomite Alps, Italy).

The historical locality of Kocury yielded the first definitive dinosaur remains from Poland, Velocipes guerichi von Huene, 1932, but quickly fell into obscurity.

Papiliograptus retimarginatus n. sp. is reported from the praedeubeli/deubeli Biozone…

Palaeolagus, an early lagomorph from the Eocene–Oligocene of North America, is important for our understanding of the anatomy of the hypothetical last common ancestor of extant lagomorphs…

Calcitic rugosan vs. aragonitic scleractinian corals? What if modern scleractinian coral forms a bimineralic skeleton?