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Konodonty z ordowickich głazow narzutowych Polski

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Praca poświęcona jest konodontom ordowickim, wypreparowanym za pomocą kwasu octowego z wapiennych głazów narzutowych wieku ordowickiego. W materiale obejmującym około 800 okazów, 497 nadawało się do bliższego oznaczenia. Wyróżniono 33 formy, z których 21 można było dokładnie oznaczyć gatunkowo, pozostałe - w przybliżeniu. Najliczniejsze są gatunki występujące w Szwecji, w ordowiku dolnym, lecz są też takie, których zasięg stratygraficzny jest znacznie szerszy.
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Sur la nature des Chitinozoaires

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En se basant sur de très abondants matériaux de Chitinozoaires, extraits principalement des galets erratiques ordoviciens, I'auteur a fait une étude morphologique détaillée de 5 représentants typiques de ce groupe de microfossiles énigmatiques. Dans les matériaux rassemblés, outre des logettes isolées, ont été trouvés des assemblages de logettes, jusqu'ici inconnus, appartenant à Desmochitina minor Eis., Cyathochitina campanulaeformis Eis. et Parachitina curvata Eis. L'auteur conclut que: 1° tous les Chitinozoaires formaient vraisemblablement des assemblages, 2° leurs logettes correspondent selon toute probabilité, à des oeufs ou à des sacs ovigères des Métazoaires, et 3° des formes morphologiquement identiques ou voisines des Chitinozoaires sont inconnues dans la faune d'aujourd'hui.
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Discoveries of Early Devonian graptoloids have been continued in the past ten years in ever increasing areas, but particularly in Asia. All continents, except South America and Antarctica, have so far yielded Devonian graptoloids. Devonian graptoloid faunas appear to have a uniform composition all over the globe; there is no conclusive evidence for any biogeographic differentiation. The hitherto known morphological spectrum has broadened only insignificantly. About 25-30 Devonian graptoloid species and subspecies may be recognized at present, belonging to four genera: Monograptus (some 20 species), Linograptus (1), Abiesgraptus (3) and Climacograptus (1; represented by a sole specimen from the hercynicus Zone in the Carnic Alps). The Monograptus species are small to mediumsized, having 20-40, rarely over 60 thecae in a rhabdosome. They are robust and straight, except fora few moderately curved forms. The thecae vary from almost uniform to strikingly biform; typically they are of the type of M. uncinatus, at least proximally, becoming simpler towards the distal end. A minor distinctive feature of most Pragian species is the strong development of the dorsal sicular tongue. The giant Linograptus posthumus and Abiesgraptus, both of which may house up to several thousand zooids, are not found above the Lochkovian. The demonstrably highest occurrence, of Devonian graptoloids is in the uppermost Pragian, though some faunas may turn out to be somewhat younger, i.e. the latest graptoloids may straddle the Siegenian-Emsian boundary only slightly. The causes for graptoloid extinction remain obscure. Extindion was a slow, stepwise historical process which - starting off at the end of the Wenlock-was marked by a number of rather sudden incisions that in summa resulted in a progressive reduction of faunal diversity. It would appear that graptoloid evolution was somehow, perhaps intimately, connected with the history of-euxinic or poorly aerated seas.
Gloiodon strigosus (Swartz: Fr.)P. Karst. recognized as an extinct species in Poland, has been recently found in the Białowieża National Park. Iconography and synonyms are given and the distribution and ecology is discussed
Literature data on Ascalaphidae in Poland are critically discussed. Libelloides macaronius has never been found in the present-day territory of Poland. Libelloides coccajus most likely occurred in Poland at the end of the 18th century. Evidence for this statement comprises a drawing and a note in a manuscript of Charles de Perthées from 1802–1803.
Currently, there are two sauropod taxa known from the Upper Cretaceous (Maastrichtian) Nemegt Formation of Gobi Desert, Mongolia: Nemegtosaurus from the Nemegt locality and Opisthocoelicaudia from the Altan Uul IV locality. Both taxa are represented by not overlapping elements (skull and partial postcranial skeleton respectively), which arises question on their possible synonymy. Five articulated sauropod dorsal vertebrae (PIN 3837/P821, dorsals 6–10) were found in 1949 by the Mongolian Expedition of the Academy of Sciences of the USSR at the Nemegt locality. This specimen is similar to Opisthocoelicaudia in having a strong ventral ridge on dorsal centra, a low neural arch which is anteroposteriorly narrowest at the junction with the centrum and widens dorsally, and lack of hyposphene–hypantrum articulations. PIN 3837/P821 differs from Opisthocoelicaudia by having the less dorsoventrally flattened dorsal centra, a shallow ventral concavity of dorsal centra in lateral view, a vertical posterior centrodiapophyseal lamina (pcdl) in dorsals 8 and 9, a postzygodiapophyseal lamina (podl) that roofs the centrodiapophyseal fossa (pocdf), and strongly developed accessory laminae within the parapophyseal centrodiapophyseal fossa (pacdf). The sauropod femora from Nemegt Formation differ from the femur of Opisthocoelicaudia by the medial condyle extending more distally compared with the lateral condyle. Most likely these femora and PIN 3837/P821 belong to Nemegtosaurus, which would make this taxon distinct from Opisthocoelicaudia by discussed characters of dorsal vertebrae and femur
Until now Darbonetus was represented by only one valid species, the type species D. aubrelongensis from the early Oligocene of the Quercy region, France. A late appearance of this genus and of its closest relative Amphidozotherium have been thought to result from dispersal from outside western Europe, rather than a local ancestry earlier in the late Eocene. Here, a new species, Darbonetus sigei sp. nov., is described from the middle Priabonian site of La Débruge, France. Although clearly closely related to D. aubrelongensis, D. sigei shows less reduction of its p2, p3, and m3 than in the more derived type species. The early age of D. sigei suggests that its origins were within the still isolated central European island and that it is unnecessary to invoke dispersal from another continent.
A description and analysis is given of three Neogene odontocete caudal vertebrae that were bitten by the extinct megatooth sharks Carcharocles megalodon or Carcharocles chubutensis. The peduncular caudal vertebrae show bilateral gouge marks consistent with having been actively bitten and wedged between adjacent teeth of C. megalodon or C. chubutensis. None of the vertebrae show signs of healing. The occurrence of bite marks on distal caudals suggests active predation (vs. scavenging) in order to immobilize even relatively small prey prior to consumption.
Although the distribution of Asian crocodyliforms was extended northwards during the Paleocene–Eocene greenhouse world, the fossil record in northern Asia becomes scarce towards the end of the Eocene. We here report the first crocodyliform (an isolated tooth) from the upper Eocene Ergilin Dzo Formation of southeastern Mongolia, the mammalian fauna of which defines the Ergilian Asian Land Mammal Age. The conical non-recurved crown, the near complete root with the central resorption facet, and its late Eocene age suggest the crocodyliform affinity of the tooth. The current finding represents one of the northernmost occurrences of crocodyliforms in the upper Eocene of Asia (paleolatitude ca. 49°30’ N), and demonstrates that SE Mongolia probably met thermal requirements of crocodyliforms during the late Eocene.
Fossil turtles are one of the least studied clades in regard to endocranial anatomy. Recently, the use of non-invasive technologies, such as radiographic computed tomography (CT), increased the knowledge of the neuroanatomy of several extinct and extant taxa. Here, we provide the description of the nasal cavity, cranial endocast, and inner ear of the stem turtle Naomichelys speciosa based on digital 3D reconstructions. This terrestrial form is characterized by a nasal cavity with anteroposteriorly elongated vestibulum and a large cavum nasi proprium, traits typically related to terrestrial habits. The large olfactory region of the cavum nasi proprium suggests that olfaction was probably the most important sense for this species. Our description of N. speciosa adds novel information to the knowledge of endocranial anatomy in early turtle evolution and provides an important foundation for future analyses and comparisons.
The caudofemoralis longus muscle (CFL) is the primary limb retractor among non-avian sauropsids, and underwent a dramatic reduction along the dinosaur lineage leading to birds. The osteological correlates of the CFL among fossil reptiles have been controversial, because, contrary to traditional interpretations, the extent of the muscle is not necessarily related to the distribution of the caudal ribs. In some Cretaceous dinosaurs, the extent of the CFL has been inferred based on the preserved bony septa between the CFL and other tail muscles. Here, we describe a series of tail vertebrae of the Jurassic dinosaur Allosaurus, each showing a previously-unreported feature: a sulcus, formed by a regular pattern of tightly packed horizontal slits, that runs vertically along the lateral surfaces of the centra and neural arches. These sulci are interpreted as the origin attachment sites of the CFL, allowing for direct determination of the muscle extent along the tail of this dinosaur. Anteriorly to the 18th caudal vertebra, the sulcus runs along most of the centrum and neural arch, then it progressively reduces its vertical extent, and disappears between caudals 24 and 32, a pattern consistent with previous CFL reconstructions in other theropods.
The Palaehoplophorini is a tribe of glyptodonts represented by fragmentary specimens for which the oldest records occur in the Pedregoso and Río Mayo formations (middle–late Miocene) in Patagonia (Argentina). The mammal fossils from those formations were the basis for the recognition of the Mayoan fauna, placed between the Friasian sensu stricto/Colloncuran–Laventan and the Chasicoan faunas. The only identified glyptodont from Río Mayo Formation is Palaehoplophorus meridionalis represented only by its type material (i.e., caudal tube) and the precise provenance is unknown. We describe a new specimen of Palaehoplophorus meridionalis collected in the Río Mayo Formation represented by associated osteoderms of the dorsal carapace and postcranial elements, plus part of the type and assigned specimens that remain unpublished from the old collection. This is the first description of osteoderms from the dorsal carapace of this species and postcranial elements (the first for a Palaehoplophorini), and the first glyptodont with precise provenance from Río Mayo Formation. As result of improving the description and emending the diagnosis, we agree with previous authors about the basal position of Palaehoplophorus meridionalis within the tribe. Finally, we review the Glyptodontidae association of the Mayoan fauna, which are exclusively represented by Palaehoplophorini (Palaehoplophorus meridionalis and Palaehoplophoroides rothi) and Glyptodontidae indet. This association supports a greater affinity of this fauna with the younger Chasicoan than with the older Friasian sensu stricto/Colloncuran–Laventan faunas.
This paper describes the astogeny and structure of Gymnograptus linnarssoni (Moberg) and G. retioloides (Wiman) and also the structure of Gymnograptus sp. The material has been etched from erratic boulders of Scandinavian origin, which are of Middle Ordovician age. The systematic position of the genus Gymnograptus is discussed.
Jan Czarnocki, éminent investigateur de la géologie des Monts de Ste -Croix (Góry Świętokrzyskie), a découvert en 1927 des empreintes de Méduses fossiles dans le Cambrien inférieur de la localité Brzechów. La collection lassie par Czarnocki comprend 118 individus plus ou moins fragmentaires. Ces Méduses sont attribuées à une seule espèce decrite ici sous le nom de Velumbrella czarnockii n. gen., n.sp. Cette forme s' approche surtout du genre Ediacaria Sprigg du Cambrien inférieur de l'Australie. Toutes les deux semblent appartenir aux Trachymedusae ou aux Limnomedusae.
A boring annelid- like parasite associated with Atrypa zonata Schnur from the Givetian shales of the Holy Cross Mountains (Góry Świętokrzyskie, Poland) is described under new generic and specific name - Diorygma atrypophilia.
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Four species of plicatulas from the Middle and Upper Jurassic have been described. Their external and internal morphology, variability and ontogenetic development have been studied and their systematic and stratigraphic positions - discussed.
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Two new Upper Bathonian species : Progonocythere polonica n. sp . and Progonocythere ogrodzieniecensis n, sp. are described from the Clydoniceras discus zone in Ogrodzieniec near Zawiercie, Poland. The ontogeny and development of the hinge in t he successive instars of the species P. polonica n . sp. have been studied. The presence there has been ascertained of a sieve plate closing up the lumen of straight pore canals.
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On the genus Poloniella Gürich (Ostracoda)

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This paper reports the results of investigations on the ontogeny, variation, dimorphism and structure of carapace in several species of Poleniella Gürich (Kloedenellidae) from Middle Devonian strata of the Holy Cross Mountains (Góry Świętokrzyskie) in Poland. Dizygopleura Ulrich & Bassler is regarded as a synonym of the genus Poloniella Gürich. Two new species: P. brevis and P. diversa have been distinguished; a description is given of the male specimens of two species, heretofore not recorded from Poland (P. tertia Krömmelbein, P. cingulata Warthin), also of two other species (P. kielanae Přibyl, P. devonica Gürich) previously reported from Poland.
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Note on some Cranias from central Poland

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Two kinds of Cranias have been collected between 193 m. and 207 m. in a boring at Boryszew, central Poland. Most valves represent a new member of the "Crania tuberculata group". For members of this group, comprising species from the Maastrichtian, Danian, Paleocene and ?Eocene, a new subgenus of Crania - C. (Danocrania) n.subg. is erected with Crania tuberculata Nilsson as type species. The Polish representatives are named: C. (Danocrania) polonica n.sp. and C. (Danocrania) polonica semicostulata n.subsp. The subspecies shows a peculiar outer sculpture very similar to that shown by a C. (Danocrania) from the upper Middle Danian of Faxe (Denmark). The remaining Cranias all belong to the subgenus C. (Isocrania) , known only in association with C. (Danocrania) in Danian strata. The Polish form is related to C. (Isocrania) posselti Rkz. from the Upper Danian of Denmark. The age of the Crania-bearing strata at Boryszew is estimated to be upper Middle Danian. If the strata are younger, their Danian fossil content, e.g. the Cranias, Tylocidaris masoviensis Kongiel and Stereocidaris rosenkrantzi (Ravn), must be considered as derived fossils. A ventral valve of the Upper Senonian C. (Isocrania) paucicostata Bosquet in Lower Paleocene strata at Bochotnica shows that derived fossils may occur in the Lower Paleocene of central Poland.
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