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1

Miocene rhinoceroses from Romania: an overview

100%

Codrea V.

Acta Zoologica Cracoviensia

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1996

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tom 39

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nr 1

2

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Middle Miocene bovids from Mae Moh Basin, Northern Thailand: The first record of the genus Eotragus from Southeast Asia

84%

Suraprasit K., Chaimanee Y., Chavasseau O., Jaeger J.-J.

Acta Palaeontologica Polonica

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2015

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tom 60

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nr 1

We describe the first bovid fossils from the late middle Miocene (13.4–13.2 Ma) of the Mae Moh Basin of Northern Thailand, and assign the material to the new species Eotragus lampangensis sp. nov., Eotragus cf. lampangensis, and an indeterminate bovid. Our material represents the first report of Eotragus from Southeast Asia, thus greatly extending the geographic distribution of this genus across the Old World continents. While comparisons of the Southeast Asian specimens with abundant material of E. clavatus from Sansan (France) and E. aff. clavatus from Tarazona de Aragón (Spain) indicate a high degree of intraspecific variation within single species of Eotragus, the existence of two distinct taxa at Mae Moh remains a possibility. Based on previous carbon isotope studies of Mae Moh herbivore tooth enamel, Eotragus lampangensis sp. nov. foraged predominantly in an ecotone between grassland and forest.

3

Ungulates of the middle Miocene Monarch Mill Formation, Churchill County, Nevada, USA

84%

Smith K. S., Czaplewski N. J., Coombs M. C.

Acta Palaeontologica Polonica

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2022

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tom 67

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nr 1

4

Planktonic foraminiferal response to Middle Miocene cooling in the Southern Ocean [ODP Site 747, Kerguelen Plateau]

84%

Majewski W.

Acta Palaeontologica Polonica

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2010

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tom 55

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nr 3

541-560

The response of planktonic foraminifera to changing oceanographic conditions during Middle Miocene Climate Transition (MMCT) ~14 million years ago (Ma) at ODP Site 747 (Kergeulen Plateau) is investigated. Faunal changes are presented in the background of sea surface temperature (SST) estimates and multi−taxon δ18O and δ13C data presented in other studies. Four faunal transitions are distinguished between 15.0 and 12.2 Ma. The first two affected only a limited number of taxa, and do not lead to large−scale assemblage reorganizations. They are only minor assemblage changes within the pre−MMCT fauna. The first (14.5–14.4 Ma) is marked by a reduction in the Globorotalia zealandica plexus in favor of the Globorotalia praescitula plexus, coupled with the first signs of increased seasonality. The second (14.3–14.2 Ma) is characterized by recovery and diversification of the G. zealandica plexus and an increase in Turborotalita quinqueloba in response to further enhanced seasonality. The third faunal transition across the Middle Miocene Shift (MMS) in 18O (13.9–13.8 Ma) affects almost all planktonic foraminifera, leading to dismembering of the pre−MMCT assemblage. These changes were triggered by the SST drop by ~7C, followed by reduced sea−surface salinity following the MMS, which favored the opportunistic Neogloboquadrina continuosa. Its dominance spans the transitional period (13.8–13.2 Ma), during which several planktonic foraminiferal events gradually shaped the post−MMCT assemblage. The fourth faunal threshold took place during the hiatus in the ODP Hole 747A record spanning 13.2–12.5 Ma. It is expressed by the establishment of an assemblage dominated by Globorotalia praescitula and Globigerina bulloides in association with diminishing of the low−salinity surface layer. The two dominant taxa exhibit well−defined morphologies, much different from their earlier relatives. The microperforate foraminifera show relatively few morphological changes, probably due to their morphological conservatism. Their changes are thought to herald the large foraminiferal transformations, especially in case of the third and fourth faunal transition thresholds.

5

New data on Paenelimnoecus from the Middle Miocene of Spain support the shrew subfamily Allosoricinae

84%

Van d. H. O. L. W., Furio M., Garcia-Paredes I.

Acta Palaeontologica Polonica

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2009

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tom 54

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nr 1

159-164

Limnoecus truyolsi was long considered an enigmatic shrew. Additional material from the Calatayud−Montalbán Basin (Spain) shows it to be referable to the genus Paenelimnoecus. The species represents an intermediate form between P. micromorphus and P. crouzeli. This lineage confirms the separate development of the “soricine” p4, and thus supports the Allosoricinae as a separate subfamily.

6

Middle Miocene carnivorans from the Monarch Mill Formation, Nevada

84%

Smith K., Czaplewski N., Cifelli R. L.

Acta Palaeontologica Polonica

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2016

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tom 61

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nr 1

The lowest part of the Monarch Mill Formation in the Middlegate basin, west-central Nevada, has yielded a middle Miocene (Barstovian Land Mammal Age) vertebrate assemblage, the Eastgate local fauna. Paleobotanical evidence from nearby, nearly contemporaneous fossil leaf assemblages indicates that the Middle Miocene vegetation in the area was mixed coniferous and hardwood forest and chaparral-sclerophyllous shrubland, and suggests that the area had been uplifted to 2700–2800 m paleoaltitude before dropping later to near its present elevation of 1600 m. Thus, the local fauna provides a rare glimpse at a medium- to high-altitude vertebrate community in the intermountain western interior of North America. The local fauna includes the remains of fish, amphibians, reptiles, birds, and 25 families of mammals. Carnivorans, the focus of this study, include six taxa (three of which are new) belonging to four families. Canidae are represented by the borophagine Tomarctus brevirostris and the canine Leptocyon sp. indet. The earliest record and second North American occurrence of the simocyonine ailurid Actiocyon is represented by A. parverratis sp. nov. Two new mustelids, Brevimalictis chikasha gen. et sp. nov. and Negodiaetictis rugatrulleum gen. et sp. nov., may represent Galictinae but are of uncertain subfamilial and tribal affinity. The fourth family is represented by the felid Pseudaelurus sp. indet. Tomarctus brevirostris is limited biochronologically to the Barstovian land mammal age and thus is consistent with the age indicated by other members of the Eastgate local fauna as well as by indirect tephrochronological dates previously associated with the Monarch Mill Formation. Actiocyon parverratis sp. nov. extends the temporal range of the genus Actiocyon from late Clarendonian back to the Barstovian. The Eastgate local fauna improves our understanding of mammalian successions and evolution, during and subsequent to the Mid-Miocene Climatic Optimum (~14–17 Ma).

7

Traces of cassid snails predation upon the echinoids from the Middle Miocene of Poland: Comments on Ceranka and Zlotnik [2003]

84%

Donovan S. K., Pickerill R. K.

Acta Palaeontologica Polonica

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2004

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tom 49

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nr 3

Small round holes in the tests of fossil echinoids present problems of interpretation, the most obvious questions being who did it and why? Both have been the cause of considerable conjecture by ichnologists and echinoderm palaeontologists. “Drill holes” described from the Miocene of Poland in the echinoid Echinocyamus linearis Capeder are classified within the ichnospecies Oichnus simplex Bromley. Contrary to the original analysis, the possibility remains that some of these holes were the result of eulimid parasitism rather than predation by juvenile cassids. If other, larger echinoids in the fauna suffered predation by adult cassids, then the available samples are probably too small for it to be recognised.

8

Habitat preferences of European Middle Miocene omnivorous ursids

84%

Viranta S.

Acta Palaeontologica Polonica

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2004

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tom 49

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nr 2

Indarctos spp. were the first large−bodied bears with omnivorous tendencies. Two Indarctos fossils assigned to I. arctoides ssp. by Bernor, Feibel, et al. (2003) and Viranta and Werdelin (2003) show that the genus had a wide geographic range in Europe in the Middle Miocene and was represented by at least two contemporaneous species. Present work shows that the two species of Indarctos lived in a mixture of environments, and were not clearly separated into distinct habitats. Indarctos seems to have evolved during an interval of faunal turnover in Europe. The appearance of Indarctos coincided with an extinction of small omnivorous mammals and was accompanied by the appearance of other large omnivores.

9

The brachiopod Lingula in the Middle Miocene of the Central Paratethys

84%

Emig C. C., Bitner M. A.

Acta Palaeontologica Polonica

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2005

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tom 50

|

nr 1

In the Middle Miocene deposits of the Central Paratethys, lingulides, because of their low taphonomic potential, are very rare and difficult to identify. Two species of Lingula, L. dumortieri Nyst, 1843 and L. dregeri Andreae, 1893, have been recorded from the Badenian (Middle Miocene) of Poland. Re−examination of the specimens has shown that none of them can be referred to Lingula dumortieri (now Glottidia dumortieri). The rounded outline of the scar of the posterior adductor muscle and the lack of the septa indicate that all the specimens must be referred to the genus Lingula. Their valves appear to be slightly more convex than in other species of Lingula and closely resemble the Recent L. tumidula Reeve, 1841. We assign all the specimens of Lingula found in the Miocene of Poland to L. dregeri. Because our specimens are juveniles and some are broken we cannot adequately redescribe this species. Lingula dregeri was distributed in the Middle Miocene of the Central Paratethys (Austria, Poland, Ukraine, Romania), while Glottidia dumortieri occurs in the Pliocene of Northern Europe (Atlantic Province).

10

Oxygen and carbon isotopic changes in the Middle Miocene [Badenian] foraminifera of the Gliwice Area [SW Poland]

84%

Durakiewicz T., Gonera M., Peryt T. M.

Bulletin of the Polish Academy of Sciences. Earth Sciences

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1997

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tom 45

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nr 2-4

11

Moles [Talpidae] from the late Middle Miocene of South Germany

84%

Ziegler R.

Acta Palaeontologica Polonica

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2003

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tom 48

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nr 4

The moles from the South German fissure fillings Petersbuch 6, 10, 18, 31, 35, 48 include 14 species, four of which are new: Leptoscaptor bavaricum gen. et sp. nov., Leptoscaptor robustior gen. et sp. nov., Myxomygale gracilis sp. nov. and Tenuibrachiatum storchi gen. et sp. nov. Most samples are characterised by their high species diversity. Talpa minuta is the most common species in nearly all samples. Leptoscaptor is characterised by a slender humerus and by the loss of lower antemolars. It is interpreted as a Miocene offshoot of the Scalopini. Myxomygale gracilis represents the latest record of the genus. Tenuibrachiatum storchi has a slender humerus and one lower incisor is lost. The species is structurally ancestral to the extant Urotrichus. The genus Pseudoparatalpa Lopatin, 1999 is considered a synonym of Paratalpa. The talpids of the Petersbuch fissures are in line with a Middle Miocene correlation of MN 7+8 as already indicated by the cricetids. The remains of desmans in the Petersbuch 6 fissure filling indicate the proximity of water. The presence of Urotrichini in nearly all samples, albeit scanty, suggests a forestal environment within the range of the owls, which preyed on them.

12

Badenian [Middle Miocene] Ratyn Limestone in Western Ukraine and Northern Moldavia: microfacies, calcareous nannoplankton and isotope geochemistry

84%

Peryt T. M., Peryt D.

Bulletin of the Polish Academy of Sciences. Earth Sciences

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1994

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tom 42

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nr 2

13

Bolboforms [Protophyta, incertae sedis] from the Middle Miocene of Upper Silesia [Carpathian Foredeep, Southwestern Poland]

84%

Szczechura J.

Bulletin of the Polish Academy of Sciences. Earth Sciences

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1997

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tom 45

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nr 2-4

14

Calcareous nannoplankton stratigraphy of the Middle Miocene in the Gliwice Area [Upper Silesia, Poland]

84%

Peryt D.

Bulletin of the Polish Academy of Sciences. Earth Sciences

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1997

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tom 45

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nr 2-4

15

Palaeoecology of marine Middle Miocene [Badenian] in the Polish Carpathians [Central Paratethys]. Foraminiferal record

84%

Gonera M.

Bulletin of the Polish Academy of Sciences. Earth Sciences

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1994

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tom 42

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nr 2

16

The gomphotheriid mammal Platybelodon from the Middle Miocene of Linxia Basin, Gansu, China

67%

Wang S., He W., Chen S.

Acta Palaeontologica Polonica

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2013

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tom 58

|

nr 2

In this paper, we report on abundant fossils of Platybelodon from the Middle Miocene of the Linxia Basin, China. Most of the fossils were discovered at two localities (Laogou and Zengjia) in the upper Middle Miocene Hujialiang Formation, and possess derived characters for the genus, including a relatively slender upper incisor, the development of a transverse ledge on the narrowest part of the mandibular symphysis, narrow, elongate and hypsodont third molars, the development of fourth loph(id)s on the second molars, and the development of small enamel conules and cementum in the interloph(id)s. Following comparisons with other Eurasian platybelodonts, we assign these remains to Platybelodon grangeri, and demonstrate that they are morphologically intermediate between P. grangeri from the Tunggurian localities of Tarim Nor and Platybelodon Quarry in Inner Mongolia. We suggest that the locality of Laogou may be younger than that of Zengjia, based on the occurrence of platybelodonts showing a suite of more derived characters. In addition, we assign two further specimens of Platybelodon from the lower Middle Miocene Dongxiang Formation of the Linxia Basin to Platybelodon danovi, owing to their retention of plesiomorphic characters distinguishing them from other Linxia Platybelodon fossils. Based on a cladistic analysis, we propose an evolutionary sequence of platybelodonts in Eurasia, and discuss potential functional adaptations.

17

Middle Miocene conoidean gastropods from western Ukraine (Paratethys): Integrative taxonomy, palaeoclimatogical and palaeobiogeographical implications

67%

Scarponi D., Della Bella G., Dell’Angelo B., Huntley J. W., Sosso M.

Acta Palaeontologica Polonica

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2016

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tom 61

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nr 2

The late Badenian (early Serravallian) conoideans from the Pidhirtsi Beds of western Ukraine (central Paratethys) have been investigated by means of a comprehensive and easy-to-perform morphometric approach, allowing the characterisation of eleven species, of which seven are new to science: Mangelia angulicosta sp. nov., M. larga sp. nov., M. pseudorugulosa sp. nov., M. odovychenae sp. nov., Bela varovtsiana sp. nov., Bela? robusta sp. nov., Pyrgocythara turrispiralata sp. nov. Additionally we also identified Raphitoma cf. R. ringicula, Andonia sp. aff. A. transsylvanica, Teretia cf. T. turritelloides, and Haedropleura sp. aff. H. septangularis. The relative high number of new species documented, relative to the total previously known from this stratigraphic interval, is interpreted as resulting mainly from combined methodological (dearth of taxonomic studies on Ukrainian conoideans) and environmental (high degree of habitat fragmentation in reef setting) factors. The conoideans documented herein add important information regarding palaeoclimaticalogical and palaeobiogeographical interpretations of the Serravallian Paratethys. The conoideans display strong affinity at the species level and complete overlap at the genus level with Neogene Proto-Mediterranean−Atlantic conoideans, thereby challenging the interpretation of late Badenian Paratethyan macrofaunal assemblage endemism. The lack of typical warm-water indicators (e.g., Conidae, Clavatulidae, or Pseudomelatomidae) within the studied material supports the interpretation that the fauna thrived during the late phase and/or soon after the Middle Miocene Climatic Transition (14.2−13.8 Ma).

18

Neogene radiolarian biostratigraphy and faunal evolution rates in the eastern equatorial Pacific ODP Sites 845 and 1241

67%

Kamikuri S.-I., Motoyama I., Nishi H., Iwai M.

Acta Palaeontologica Polonica

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2009

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tom 54

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nr 4

Radiolarians from Sites 845 and 1241 in the eastern equatorial Pacific were examined in order to evaluate the role of paleoceanographic perturbations upon the general faunal evolutionary pattern of tropical planktonic organisms during the last 17 Ma. Radiolarian appearance and extinction rates indicate no periods of mass extinctions during the past 17 Ma. However, a relatively rapid replacement of the species in the radiolarian assemblages occurs near the middle–late Miocene boundary. This replacement event represents the gradual extinction of a number of radiolarian species and their gradual replacement by evolving new species. The modern equatorial circulation system was formed near the middle–late Miocene boundary due to the closure of the Indonesian seaway. The minor faunal turnover appears to be associated with the formation of the modern equatorial circulation system near the middle–late Miocene boundary. Diatom assemblages in the equatorial Pacific became more provincial in character after about 9 Ma. The appearance and extinction rates of planktic foraminifers were relatively high near the middle–late Miocene boundary, and those of calcareous nannoplankton reached high values in the early late Miocene in the equatorial Pacific Ocean. Thus, faunal evolution from the middle Miocene type to late Miocene types occurred first, being followed by floral evolution. The middle–late Miocene boundary is not a sharp boundary for planktonic microfossils, but marks a time of transition critical for faunal and floral evolution in both siliceous and calcareous microfossil assemblages in the equatorial Pacific Ocean.

19

Cranial morphology, systematics and succession of beavers from the middle Miocene Valentine Formation of Nebraska, USA

67%

Korth W. W.

Acta Palaeontologica Polonica

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2008

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tom 53

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nr 2

Previously, it was believed that there was a dramatic turn−over in the fauna of beavers (Rodentia, Castoridae) from the Barstovian to the Clarendonian from Nebraska. Stratigraphically controlled collections of fossil castorids from the Valentine Formation, which cross this boundary, now indicate that a complete change in the castorid fauna did not occur, but instead a more gradual change and replacement of earlier taxa with more advanced taxa occurred. The range of Eucastor tortus and Monosaulax skinneri is extended from late Barstovian into the latest Barstovian Devil’s Gulch Member and the range of the otherwise Clarendonian species of Prodipoides is extended downward into the late Barstovian Crookston Bridge Member. The skulls of Monosaulax skinneri and Eucastor valentinensis are described in detail for the first time. The cranial morphology of M. skinneri is primitive for Castoroidini and that of E. valentinensis is specialized for tooth−digging behavior as in the Nothodipoidini. A new genus, Temperocastor, is proposed for E. valentinensis based on its primitive morphology of the cheek teeth and derived cranial morphology. Temperocastor represents the most primitive nothodipoidine.

20

A new kentriodontine dolphin from the middle Miocene of Portugal

67%

Lambert O., Estevens M., Smith R.

Acta Palaeontologica Polonica

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2005

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tom 50

|

nr 2

A nearly complete skull, a partial left scapula, five lumbar vertebrae, and some fragments of ribs of a medium−sized kentriodontid dolphin (Cetacea, Odontoceti) discovered in the middle Miocene of Setúbal Peninsula, Lower Tagus Basin, Portugal, are herein assigned to a new genus and species, Tagicetus joneti. Within the grade−level family Kentriodontidae, the new taxon is referred to the specifically and ecologically diversified subfamily Kentriodontinae, essentially defined by a well−developed posterolateral projection of the nasal. The elongated rostrum, the constriction of the asymmetric premaxillae at the base of the rostrum, the anteriorly elongated palatines, and the elevated vertex of T. joneti suggest closer affinities with the larger, more derived Macrokentriodon morani, from the middle Miocene of Maryland (USA). Among other features, T. joneti differs from the latter in having more numerous maxillary teeth and shorter zygomatic processes of the squamosals. Besides providing additional indications about the evolutionary trends within the Kentriodontinae, this occurrence constitutes the first record of the subfamily from the east coast of the North Atlantic based on a nearly complete skull. Considering their morphological diversity and wide geographic range, the Kentriodontinae may have constituted one of the dominant groups of Miocene oceanic dolphins.

Ograniczanie wyników

Miocene rhinoceroses from Romania: an overview

Middle Miocene bovids from Mae Moh Basin, Northern Thailand: The first record of the genus Eotragus from Southeast Asia

Ungulates of the middle Miocene Monarch Mill Formation, Churchill County, Nevada, USA

Planktonic foraminiferal response to Middle Miocene cooling in the Southern Ocean [ODP Site 747, Kerguelen Plateau]

New data on Paenelimnoecus from the Middle Miocene of Spain support the shrew subfamily Allosoricinae

Middle Miocene carnivorans from the Monarch Mill Formation, Nevada

Traces of cassid snails predation upon the echinoids from the Middle Miocene of Poland: Comments on Ceranka and Zlotnik [2003]

Habitat preferences of European Middle Miocene omnivorous ursids

The brachiopod Lingula in the Middle Miocene of the Central Paratethys

Oxygen and carbon isotopic changes in the Middle Miocene [Badenian] foraminifera of the Gliwice Area [SW Poland]

Moles [Talpidae] from the late Middle Miocene of South Germany

Badenian [Middle Miocene] Ratyn Limestone in Western Ukraine and Northern Moldavia: microfacies, calcareous nannoplankton and isotope geochemistry

Bolboforms [Protophyta, incertae sedis] from the Middle Miocene of Upper Silesia [Carpathian Foredeep, Southwestern Poland]

Calcareous nannoplankton stratigraphy of the Middle Miocene in the Gliwice Area [Upper Silesia, Poland]

Palaeoecology of marine Middle Miocene [Badenian] in the Polish Carpathians [Central Paratethys]. Foraminiferal record

The gomphotheriid mammal Platybelodon from the Middle Miocene of Linxia Basin, Gansu, China

Middle Miocene conoidean gastropods from western Ukraine (Paratethys): Integrative taxonomy, palaeoclimatogical and palaeobiogeographical implications

Neogene radiolarian biostratigraphy and faunal evolution rates in the eastern equatorial Pacific ODP Sites 845 and 1241

Cranial morphology, systematics and succession of beavers from the middle Miocene Valentine Formation of Nebraska, USA

A new kentriodontine dolphin from the middle Miocene of Portugal