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Features of the fossil record of evolution

100%

Dzik J.

Acta Palaeontologica Polonica

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1991

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tom 36

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nr 2

Neither allopatric speciations nor extinctions of lineages are directly observable in the fossil record. This significantly reduces the value of inferred durations of taxa as a basis for studies on patterns of evolution. The ranges of taxa detected in rock strata are inevitably shorter than the real durations of lineages. Rates of evolution estimated by counting reported ranges of taxa therefore appear higher than they really were. Biometric studies of gradually evolving lineages indicate that the durations of ‘species’ (morphologies) were actually many times longer. Therefore, the ancestor-descendant relationships along monospecific lineages remain the most important subjects of study in evolutionary paleontology. A way, in which an ancestor-descendant hypothesis can be falsified, is presented.

2

Oeufs fossiles des cephalopodes?

100%

Kozlowski R.

Acta Palaeontologica Polonica

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1965

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tom 10

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nr 1

L'auteur essaie d'interpréter la nature des énigmatiques vésicules ordoviciennes qu'il a déorites en 1959 sous le nom de Clistrocystis graptolithophilius Kozł. Il constate leur surprenante ressemblance avec les oeufs de la seiche. Cela suggère l'idée qu'il y puisse s'agir des oeufs d'un Céphalopode ordovicien.

3

Les microfossiles du Jurassique superieur de Magnuszew (Pologne)

100%

Gorka H.

Acta Palaeontologica Polonica

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1965

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tom 10

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nr 3

Sont décrits les microfossiles des sédiments marins du Jurassique supérieur, extraits du sondage à Magnuszew et appartenant aux groupes suivants: les Dinoflagellés, les Acritarches, les microfossiles incertae sedis et les Algues sédentaires. Les Dinoflagellés appartiennent à 12 espèces, parmi lesquelles ont été distingués 2 nouveaux genres: Tetrasphaera n.gen, et Palaeosphaerium n.gen., ainsi que 5 nouvelles espèces: Palaeoperidinium nuciformoides n.sp., P. rhomboidalis n.sp., Hystrichosphaeridium polonicum n.sp., Tetrasphaera rara n.sp. et Palaeosphaerium infrequens n.sp. Parmi les Acritarches on a distingué 4 espèces, et parmi les microfossiles incertae sedis - 3 espèces attribuées aux deux genres nouveaux; ce sont: Dictyochroa ovalis n.gen., n.sp., Alisum magnum n.gen., n.sp. et Alisum parvum n.sp. Sont décrits, en outre: un microfossile problématique, génériquement et spécifiquement indéterminable, ainsi que deux menues Algues, appartenant, probablement, aux Chlorophycées. Une liste de la répartition stratigraphique des microfossiles, se trouvant dans les échantillons examinés, est jointe au travail.

4

Adam Urbanek (1928-2014)

100%

Kozlowska A., Zalasiewicz J.

Acta Palaeontologica Polonica

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2014

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tom 59

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nr 3

5

Comodon Kretzoi and Kretzoi, 2000 replaces Phascolodon Simpson, 1925 [Mammalia], not Phascolodon Stein, 1859

100%

Cifelli R. L.

Acta Palaeontologica Polonica

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2002

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tom 47

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nr 1

6

Additional evidence for the drilling behavior of Paleozoic gastropods

100%

Gahn F. J., Fabian A., Baumiller T. K.

Acta Palaeontologica Polonica

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2003

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tom 48

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nr 1

Although the record of Paleozoic drillholes is long and extensive, evidence pertaining to the identity of the drillers is sparse. The most conclusive evidence, a driller “caught in the act”, has been documented only once (Baumiller 1990). In that example, a drillhole in the calyx of a crinoid was found directly beneath an attached platyceratid gastropod. Additional evidence for drilling by platyceratids has been circumstantial, i.e., based on the association of platyceratids with certain blastoids and crinoids, and the presence of drillholes in other crinoid and blastoid taxa. To a skeptic, the lack of congruence between drilled and platyceratidinfested crinoids and blastoids is not sufficient evidence that platyceratids were the drillers. More conclusive evidence requires examples of drillholes in taxa that are known to have been platyceratid−infested, preferably from localities where both infested specimens and drilled specimens co−occur.

7

Adrian Kin (1979–2012)

88%

Jagt-Yazykova E. A.

Acta Palaeontologica Polonica

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2012

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tom 57

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nr 4

8

Formations recifales du Devonien des Monts de Sainte-Croix (Pologne)

88%

Pajchlowa M., Stasinska A.

Acta Palaeontologica Polonica

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1965

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tom 10

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nr 2

Sont présentés les résultats des observations sur les formations récifales dans le Frasnien et le Givétien des Monts de Sainte-Croix (Góry Świętokrzyskie), dans les localités Kadzielnia, Sitkówka et Jurkowice. A Kadzielnia ce sont les biohermes et à Sitkówka et Jurkowice - les biostromes.

9

Gertruda Biernat (1923–2016)

88%

Halamski A. T., Balinski A.

Acta Palaeontologica Polonica

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2016

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tom 61

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nr 2

10

Les organismes sedentaires sur les rostres des belemnites du Cretace superieur

88%

Pugaczewska H.

Acta Palaeontologica Polonica

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1965

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tom 10

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nr 1

24 organismes sédentaires fixés sur les rostres des Bélemnites du Crétacé supérieur de Pologne sont décrits. Parmi ces organismes il y a des représentants de divers groupes d'animaux: Foraminifères - 3 espèces, Bryozoaires 7 espèces, Annélides - 3 espèces, Lamellibranches - 2 espèces, Alcyonaires - espèces et 1 organisme problématique.

11

Le developpement d'un graptolite Tuboide

88%

Kozlowski R.

Acta Palaeontologica Polonica

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1963

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tom 08

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nr 2

Les échantillons extraits des galets erratiques ordoviciens, appartenant à un représentant de l'ordre des Tuboidea - Dendrotubus erraticus n. sp. - ont permis, pour la première fois, d'étudier la sicule et de faire une analyse détaillée de l'astogenèse de la colonie. L'auteur arrive à la conclusion que la sicule de ce Graptolite est à différents égards plus primitive que les sicules des Dendroidea et des Graptoloidea - les seules connues jusqu'à présent. Elle a plusieurs traits communs avec la "vésicule embryonnaire" du Ptèrobranche récent - Rhabdopleura normani Allman. Les stolons de Dendrotubus erraticus n. sp. sont remarquables par la présence de diaphragmes vésiculaires. Le fossile décrit par l'auteur en 1959 sous le nom de Trimerohydra Kozł. correspond, selon toute probabilité, aux stolons d'un Graptolite voisin de Koremagraptus Bulman, 1944.

12

A probable stegosaurian track from the Late Jurassic of Poland

88%

Gierlinski G., Sabath K.

Acta Palaeontologica Polonica

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2002

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tom 47

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nr 3

Elusive tracks of stegosaurs have been long searched for by ichnologists, and various purported stegosaur imprints have recently been reported. A fragmentary trackway of a large, quadrupedal ornithischian dinosaur was found on an isolated slab of Oxfordian dolomite, on the northeastern slope of Holy Cross Mountains, Poland. The track is similar to large, blunt−toed Late Jurassic ichnites from North America. The footprints show a distinctive morphology, which fits the stegosaurian foot. The newly described ichnites from the Upper Jurassic of Poland provide the second ichnological evidence of the Late Jurassic dinosaurs in this country; numerous rich dinosaur footprint assemblages were previously known only from the Lower Jurassic outcrops.

13

Candle wax shells, morphodynamics, and the Cambrian explosion

88%

Seilacher A.

Acta Palaeontologica Polonica

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1993

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tom 38

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nr 3-4

14

Biotic responses to the Late Devonian global events: Introductory remarks

88%

Balinski A., Olempska E., Racki G.

Acta Palaeontologica Polonica

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2002

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tom 47

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nr 2

15

Tracking mammal body size distributions in the fossil record: a preliminary test of the rule of limiting similarity

88%

Martin R. A.

Acta Zoologica Cracoviensia

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1996

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tom 39

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nr 1

16

Poleomagnetic calibration of Plio-Pleistocene mammal localities in central Italy

88%

Torre D., Albianelli A., Bertini A., Ficcarelli G., Masini F., Napoleone G.

Acta Zoologica Cracoviensia

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1996

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tom 39

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nr 1

17

Biochronology of the Pleistocene deposits at Betfia [ Bihor, Romania ]

88%

Terzea E.

Acta Zoologica Cracoviensia

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1996

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tom 39

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nr 1

18

A discussion of the referral of Mimomys occitanus Thaler, 1955 [ Rodentia: Arvicolidae ] to the genus Mimomys

88%

Maul L.

Acta Zoologica Cracoviensia

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1996

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tom 39

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nr 1

19

Agastograptus from the mulde beds of Gotland

76%

Kozlowska-Dawidziuk A.

Acta Palaeontologica Polonica

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1991

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tom 36

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nr 2

Agastograptus lawsoni (Holland, Rickards et Warren 1969), known previously as Holoretiolites (Balticograptus) lawsoni Holland, Rickards et Warren 1969 from upper Wenlock of Shropshire is described from Mulde Beds of Gotland. A new diagnosis of the species, basing on abundant and well preserved fossils, has been formulated. Former Retiolites balticus Eisenack is removed from the genus Agastograptus.

20

The dorsal shell wall structure of Mesozoic ammonoids

76%

Acta Palaeontologica Polonica

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2017

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tom 62

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nr 1

The study of pristine preserved shells of Mesozoic Ammonoidea shows different types of construction and formation of the dorsal shell wall. We observe three major types: (i) The vast majority of Ammonoidea, usually planispirally coiled, has a prismatic reduced dorsal shell wall which consists of an outer organic component (e.g., wrinkle layer), which is the first layer to be formed, and the subsequently formed dorsal inner prismatic layer. The dorsal mantle tissue suppresses the formation of the outer prismatic layer and nacreous layer. With the exception of the outer organic component, secretion of a shell wall is omitted at the aperture. A prismatic reduced dorsal shell wall is always secreted immediately after the hatching during early teleoconch formation. Due to its broad distribution in (planispiral) Ammonoidea, the prismatic reduced dorsal shell wall is probably the general state. (ii) Some planispirally coiled Ammonoidea have a nacreous reduced dorsal shell wall which consists of three mineralized layers: two prismatic layers (primary and secondary dorsal inner prismatic layer) and an enclosed nacreous layer (secondary dorsal nacreous layer). The dorsal shell wall is omitted at the aperture and was secreted in the rear living chamber. Its layers are a continuation of an umbilical shell doubling (reinforcement by additional shell layers) that extends towards the ventral crest of the preceding whorl. The nacreous reduced dorsal shell wall is formed in the process of ontogeny following a prismatic reduced dorsal shell wall. (iii) Heteromorph and some planispirally coiled taxa secrete a complete dorsal shell wall which forms a continuation of the ventral and lateral shell layers. It is formed during ontogeny following a prismatic reduced dorsal shell wall or a priori. The construction is identical with the ventral and lateral shell wall, including a dorsal nacreous layer. The wide distribution of the ability to form dorsal nacre indicates that it is a plesiomorphic trait which either was passed on from gyrocone ammonoid ancestors or (re-)developed in post-Triassic ammonoids.

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