| 1. |
- Alroy, John, et al.
(författare)
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The MN System: regional or continental?
- 1998
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Ingår i: Mitteilungen der Bayerischen Staatssammlung für Paläontologie und historische Geologie. ; 38, s. 243-258
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Tidskriftsartikel (refereegranskat)
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| 11. |
- Ericson, Per G P, 1956-
(författare)
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Det osteologiska materialet
- 1994
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Ingår i: <em>Arkeologiska massfynd</em>. - Stockholm : Riksantikvarieämbetet. - 9171929126 ; , s. 44-47
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 17. |
- Ericson, Per G P, 1956-, et al.
(författare)
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Subspecific identity of prehistoric Baltic cormorants Phalacrocorax carbo
- 1997
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Ingår i: Ardea. - 0373-2266 .- 2213-1175. ; 85:1, s. 1-7
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Tidskriftsartikel (refereegranskat)abstract
- Cormorants of the subspecies Phalacrocorax carbo sinensis breed in large numbers in the Baltic Sea. They migrate to the Mediterranean region to winter and are then replaced in the Baltic by wintering individuals of the Norwegian population of the nominate subspecies carbo. Cormorants bred in the Baltic during prehistoric times too, but as evident from a comparison of skeletal measurements in present-day and prehistoric Cormorants, these individuals belonged to the nominate subspecies carbo. The Swedish subfossil record of the Cormorants available for study, does not include any remains small enough to suggest the presence of sinensis. Precisely when the subspecies sinensis immigrated into the Baltic is unknown, but it must have occurred sometime between 1500 and 1800 AD.
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| 19. |
- Ericson, Per G P, 1956-
(författare)
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Systematic relationships of the palaeogene family Presbyornithidae (Aves : Anseriformes)
- 1997
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Ingår i: Zoological Journal of the Linnean Society. - 0024-4082 .- 1096-3642. ; 121:4, s. 429-483
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Tidskriftsartikel (refereegranskat)abstract
- The early Tertiary (Paleocene and Eocene) family Presbyornithidae is one of the most completely known group of fossil birds. Essentially all parts of the skeleton are represented in the fossil record, allowing a thorough analysis of the phylogenetic position of the family. Forty-two families of nonpasserine birds representing the orders Ciconiiformes, Anseriformes, Galliformes, Gruiformes and Charadriiformes, were included in a cladistic analysis of 71 skeletal characters. The previously suggested anseriform affinity of the Presbyornithidae was confirmed. Furthermore, the family proved to be closer to the Anatidae than to the Anhimidae or Anseranatidae. The many postcranial similarities with certain charadriiform birds as the Burhinidae, obviously are plesiomorphies. By this observation, a better undestanding of character evolution in nonpasserine skeletal morphology is gained. The often suggested close relationship of anseriform and galliform birds is not confirmed by osteology. Instead, the Anseriformes and the Phoenicopteridae form a monophyletic clade that is the sister to the remaining ciconiiform birds. This result renders the Ciconiiformes sensu Wetmore (1960) polyphyletic. (C) 1997 The Linnean Society of London.
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| 21. |
- Ericson, Per G P, 1956-, et al.
(författare)
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The earliest record of house sparrows (Passer domesticus) in northern Europe
- 1997
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Ingår i: Journal of Archaeological Science. - : Elsevier BV. - 0305-4403 .- 1095-9238. ; 24:2, s. 183-190
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Tidskriftsartikel (refereegranskat)abstract
- Remains of the house sparrow (Passer domesticus) recovered from a late Bronze Age (1200-800 sc) settlement in central Sweden are described. The house sparrow is conspicuously rare in prehistoric Europe, and this record constitutes the earliest from the northern part. The find predates the introduction of domestic fowl (Gallus gallus) to Sweden, a species with which the house sparrow has been assumed to be spread simultaneously. Instead, it is here suggested that house sparrows most likely spread over Europe along with the horse Equus caballus. (C) 1997 Academic Press Limited
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| 22. |
- Ericson, Per G P, 1956-
(författare)
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The skeletal evidence for a sister-group relationship of anseriform and galliform birds - A critical evaluation
- 1996
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Ingår i: Journal of Avian Biology. - : JSTOR. - 0908-8857 .- 1600-048X. ; 27:3, s. 195-202
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Tidskriftsartikel (refereegranskat)abstract
- The osteological basis for the proposed close phylogenetical relationship of anseriform and galliform birds is evaluated and found to be very weak. Out of eleven postulated synapomorphies in cranial morphology (Cracraft 1988), three must be excluded since they express variation that is already covered by any of the other eleven characters. Another six of the postulated synapomorhies either cannot be verified to occur in most anseriforms and galliforms, or have a wide distribution outside this group. A re-analysis of the combined morphological and biochemical data set of Cracraft and Mindell (1989) with the questionable osteological characters excluded, does not corroborate an anseriform-galliform sister-group relationship, but leaves the Neognathae unresolved.
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- Fortelius, M., et al.
(författare)
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Preliminary analysis of taxonomic diversity, turnover and provinciality in a subsample of large land mammals from the later Miocene of western Eurasia.
- 1996
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Ingår i: Acta zoologica cracoviensia. ; 39, s. 167-178
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Tidskriftsartikel (refereegranskat)abstract
- We have recently reviewed the later Miocene (MN 6-13; ca 15-5 Ma ago) primates, hipparions, rhinocerotids, suoids and carnivores of Europe and the eastern Mediterranean. This work is still unpublished and analyses are underway, but a preliminary indication of some coarse patterns is given here for the sample consisting of the groups listed above: 1) There is a clear-cut difference between western and Central Europe on one hand and the eastern Mediterranean on the other. This is especially clear for species richness, which shows a rising trend throughout the Vallesian and earlier Turolian for the eastern regions and a falling trend for the western ones. 2) The major drops in species richness occurred between MN 6 and MN 7, between MN 9 and MN 10, and between MN 12 and MN 13. Of these, the "mid-Vallesian crisis" (MN 9-10) seems to have been entirely absent in the eastern Mediterranean, where species richness rose sharply during this interval. Correspondingly, the drop in MN 12-13, associated with the Messinian crisis, was predominantly an eastern phenomenon. 3) Taxon free analysis of body size and ecomorphology strongly supports the view that a diachronous opening up of the landscape from east to west took place in western Eurasia during the Astaracian and Vallesian. We postulate that the difference seen in faunal dynamics between east and west reflects habitat-related effects of this diachrony in response to the same global event of rapid physical change. 4) The early Turolian (MN 11) was characterized by high diversity and high faunal similarity, which both decreased during the later Turolian and ended with the Messinian crisis. 5) Despite highly uniform diversity and turnover patterns throughout the interval, western and Central Europe developed distinct ecological differences from about MN 10 onwards. These differences may have been associated with the persistence of closed habitats in Central Europe.
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