Proceedings of the Academy of Natural Sciences of Philadelphia (P ACAD NAT SCI PHILA)

Publisher: Academy of Natural Sciences of Philadelphia; BioOne (Organisation)

Current impact factor: 0.83

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 0.833
2013 Impact Factor 0.818
2010 Impact Factor 0.964
2009 Impact Factor 0.833
2008 Impact Factor 0.424
2006 Impact Factor 0.636
2005 Impact Factor 0.5
2004 Impact Factor 0.348
2003 Impact Factor 1.3
2002 Impact Factor 0.483
2001 Impact Factor 0.208
2000 Impact Factor 0.5
1999 Impact Factor 0.444
1998 Impact Factor 0.278
1997 Impact Factor 1.2
1996 Impact Factor 0.5
1995 Impact Factor 0.833
1994 Impact Factor 0.429
1993 Impact Factor 1
1992 Impact Factor 0.429

Impact factor over time

Impact factor

Additional details

5-year impact 0.82
Cited half-life >10.0
Immediacy index 0.33
Eigenfactor 0.00
Article influence 0.27
Website Proceedings of the Academy of Natural Sciences of Philadelphia website
Other titles Proceedings of the Academy of Natural Sciences of Philadelphia (En ligne)
ISSN 0097-3157
OCLC 60688589
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: We report on the partial skull of a small juvenile Mammut americanum Kerr from the Monmouth brooks area of New Jersey. Most Pleistocene mammal specimens from the brooks occur as disarticulated fragments. This specimen, the left side of a skull, includes portions of the premaxillae, maxillae, nasals, lacrimals, frontals, and four teeth: three sequential deciduous premolars and the permanent tusk. The skull bones are loosely articulated and essentially unfused, and the reconstructed skull shows gaps representing unossified growth zones between bones. The two anterior left deciduous teeth (DP2 and DP3) are much worn and very fragile, while the posterior left deciduous tooth (DP4) is essentially unworn. The crypt for the left first molar (M1) is partially preserved. The interior of the braincase is characterized by shallow pitting; it is neither smooth nor does it show molding against gyri and sulci of the brain. The pits are not characteristic of the inner surface of a normal mammalian skull, and appear to represent lytic lesions due to a disease process. Radiocarbon dating of the skull yielded an age of 11,680 ± 30 years.
    Proceedings of the Academy of Natural Sciences of Philadelphia 08/2015; 164(1):101-109. DOI:10.1635/053.164.0110
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    ABSTRACT: Latirus vexillulum (Reeve, 1842), described without locality, is redescribed and reported from Caroline Island in the Southern Line Islands, Kiribati, central Pacific. Specimens of L. vexillulum found at the Academy of Natural Sciences of Drexel University and previously reported as L. amplustre (Dillwyn, 1817) are here distinguished from that species.
    Proceedings of the Academy of Natural Sciences of Philadelphia 08/2015; 164(1):31-35. DOI:10.1635/053.164.0106
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    ABSTRACT: The anatomy and development of the siluriform pectoral-fin spine is described, illustrated and a terminology is suggested for its parts. Catfish pectoral-fin spines exhibit considerable diversity of size, shape, robustness, surface texture and, especially, details of the dentated or serrated anterior and posterior margins. This study illustrates the variety, and taxonomic and phylogenetic significance of pectoral-fin spine diversity in the South American goliath catfishes of the tribe Brachyplatystomini, family Pimelodidae, based on examination of spines of post-juvenile and adult specimens representing all eight living species of Brachyplatystoma and Platynematichthys. Unique pectoral-spine characters and character combinations serve to distinguish all eight species. Features of the pectoral-spines that change with growth are also described. Within the current phylogenetic framework of Pimelodidae, brachyplatystomines show character-state transformations and synapomorphies of the pectoral-fin spines that support hypotheses of monophyly for the subgenera Malacobagrus (B. rousseauxii, B. filamentosum, B. capapretum), and Goslinia (new usage) (B. platynemum, B. juruense), and also suggest a close relationship between B. tigrinum and subgenus Goslinia. Platynematichthys notatus and B. vaillantii retain relatively plesiomorphic features of the pectoral-fin spines.
    Proceedings of the Academy of Natural Sciences of Philadelphia 08/2015; 164(1):177-212. DOI:10.1635/053.164.0107
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    ABSTRACT: Austromitra rosenbergi sp. nov., is described and compared to Austromitra maculosa Turner & Simone, 1998.
    Proceedings of the Academy of Natural Sciences of Philadelphia 08/2015; 164(1):17-19. DOI:10.1635/053.164.0104

  • Proceedings of the Academy of Natural Sciences of Philadelphia 08/2015; 164(1):3-7. DOI:10.1635/053.164.0102
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    ABSTRACT: In the Appendix to his classic two-volume work, “The Natural History of Carolina, Florida and the Bahama Islands…”, Mark Catesby (1747:19, Pl. 19) described and illustrated the doradid catfish “Cataphractus Americanus”. The names “Cataphractus” and “Cataphractus Americanus” are not available from pre- and post-Linnaean editions of Catesby's work (i.e., Catesby, 1747; 1754; 1771) including Edwards' (1771b) Catalogue appended to the third edition. Linnaeus (1758), however, cited Catesby's “Cataphractus Americanus” in his description of Silurus cataphractus, a species currently valid in Acanthodoras Bleeker 1862. Based on this study of Catesby's original description and illustration, his “Cataphractus Americanus” is newly assigned to Platydoras Bleeker 1862, rendering polytypic the type series of Silurus cataphractus Linneaus 1758. Consequently, BMNH 1853.11.12.193 [ex. Museo Gronovii] is here designated the lectotype of Silurus cataphractus Linneaus 1758, and its objective synonyms Cataphractus americanus Bloch & Schneider 1801, and Cataphractus americanus Lacépède 1803.
    Proceedings of the Academy of Natural Sciences of Philadelphia 03/2014; 163(1):119-132. DOI:10.1635/053.163.0104
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    ABSTRACT: Twelve new diatom species are described from remote locations in the western United States: Cymbella blinnii sp. nov., Cymbopleura maggieae sp. nov., Encyonema drakei sp. nov., E. pentoniae sp. nov., E. willeyorum sp. nov., Frustulia esandalliae sp. nov., Gomphonema darwinii sp. nov., G. evolutionensis sp. nov., Muelleria agnellus sp. nov., M. spauldingiae sp. nov., M. tetonensis sp. nov., and Navicula harmoniae sp. nov. Descriptions are supported by LM images showing size diminution in the type populations and by SEM images. Type populations of the new species are from California (3 species), Colorado (3), Montana (2), Oregon (2), Washington (1), and Wyoming (1). All of the type materials for these new species were collected by unpaid citizen volunteers. This paper reviews other new species and significant new distribution records produced by volunteer collections. It also discusses the process of engaging citizen volunteers in diatom collection and the value of citizen collections in building diatom herbaria, in cataloging diatom biodiversity, and in expanding our knowledge of diatom biogeography, especially in remote regions with difficult access.
    Proceedings of the Academy of Natural Sciences of Philadelphia 03/2014; 163(1):61-84. DOI:10.1635/053.163.0109

  • Proceedings of the Academy of Natural Sciences of Philadelphia 03/2013; 162(1):208-209. DOI:10.1635/053.162.0113