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The Carnivoran Community from the Miocene of Sandelzhausen (Germany)

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The Carnivoran Community from the Miocene of Sandelzhausen (Germany) View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by RERO DOC Digital Library Pala¨ontol Z (2009) 83:151–174 DOI 10.1007/s12542-009-0008-6 RESEARCH PAPER The carnivoran community from the Miocene of Sandelzhausen (Germany) Doris Nagel Æ Clara Stefen Æ Michael Morlo Received: 23 May 2007 / Accepted: 10 January 2008 / Published online: 13 February 2009 Ó Springer-Verlag 2009 Abstract From the Bavarian Early/Middle Miocene Hemicyonide Hemicyon stehlini, die Amphicyoniden Am- (MN5) site Sandelzhausen, nine species of carnivoran phicyon cf. major und Pseudarctos bavaricus, die mammals are identified including the hemicyonine ursid Musteliden Ischyrictis zibethoides und Martes cf. munki, Hemicyon stehlini, the amphicyonids Amphicyon cf. major der Mephitine Proputorius pusillus, die viverride Form and Pseudarctos bavaricus, the mustelids Ischyrictis zibe- Leptoplesictis cf. aurelianensis, der felide Pseudaelurus thoides and Martes cf. munki, the mephitid Proputorius romieviensis und der ku¨rzlich beschriebene Barbourofelide pusillus, the viverrid Leptoplesictis cf. aurelianensis, the Prosansanosmilus eggeri. Die carnivore Vergesellschaf- felid Pseudaelurus romieviensis, and finally the recently tung in Sandelzhausen ist damit typisch, wenn auch ein described barbourofelid Prosansanosmilus eggeri. With wenig verarmt, fu¨r das untere bis mittlere Mioza¨nin these taxa present, Sandelzhausen shows a carnivoran Europa, aber doch verschieden von den ungefa¨hr gleich community typical, though deprived, for the Lower to alten mediterranen Faunen wie zum Beispiel C¸ andir und Middle Miocene of Europe, but different from roughly Pas¸alar in der Tu¨rkei. contemporary Mediterranean faunas such as those from C¸ andir or Pas¸alar in Turkey. Schlu¨sselwo¨rter Europa Á Deutschland Á Unter-/Mittelmioza¨n Á Carnivora Á Systematik Á Pala¨obiogeographie Keywords Europe Á Germany Á Early/Middle Miocene Á Carnivora Á Systematics Á Palaeobiogeography Abbreviations BSPG Bayerische Staatssammlung fu¨r Pala¨ontologie Kurzfassung In der bayerischen unter-/mittelmioza¨nen und Geologie, Mu¨nchen (MN5) Fundstelle Sandelzhausen konnten 9 Raubtierarten MNHNP Muse´um National d’Histoire Naturelle, Paris identifiziert werden. Dazu geho¨ren der ba¨renartige NOW Neogene of the Old World. Database of fossil mammals (http://www.helsinki.fi/science/now) D. Nagel (&) Department of Palaeontology, Universita¨t Wien, Althanstrasse 14, 1090 Wien, Germany e-mail: [email protected] Introduction C. Stefen Staatliche Naturhistorische Sammlungen Dresden, The fossil locality Sandelzhausen in the Northalpine Museum fu¨r Tierkunde, Ko¨nigsbru¨cker Landstraße 159, Molasse Basin is known since 1959 and was excavated in 01109 Dresden, Germany several campaigns by the University of Munich together e-mail: [email protected] with the Bayerische Staatssammlung fu¨r Pala¨ontologie und M. Morlo Geologie (Fahlbusch 1974a, b; Fahlbusch and Gall 1970; Forschungsinstitut Senckenberg, Abt. Messelforschung, Fahlbusch et al. 1972, 1974; Fahlbusch and Liebreich Senckenberganlage 25, 60325 Frankfurt, Germany 1999; Fahlbusch 2003). The locality yielded abundant e-mail: [email protected] 123 152 D. Nagel et al. material of a diverse vertebrate fauna with more than Genus Amphicyon Lartet, 1836. 50,000 objects. Sandelzhausen is late Early or early Middle Type species: Amphicyon major Blainville, 1841. Miocene in age and belongs to the middle part of Neogene Amphicyonidae is a carnivorous family that originated Mammal Biozone MN5 (Daxner-Ho¨ck 2003). in the Late Eocene and vanished in the Late Miocene. It More details on the geology and stratigraphy of the consists of a diverse group of species with different food locality are given in Moser et al. (2009). Some carnivoran preferences from omnivory to hypercarnivory (Viranta specimens were already published, but partly were wrongly 1996). Within the subfamily Amphicyoninae a regular and identified. This is indicated in the different sections. steady increase in size is noticeable (Ginsburg 1999). Although Lartet mentioned the name ‘‘Amphicyon’’ for the first time in 1836, it took a while until a diagnosis was Materials and methods added (for complete history see Kuss 1965). The genus Amphicyon is characterized by spacings between their The carnivores described herein all come from layers B premolars, a single rooted p2, p4 with posterior cusp, a and C of the section (see Moser et al. 2009 this volume for retention of the entoconid on m1, protocone on P4 can be more stratigraphic/geological details), between 25 and reduced, and an enlarged M2 (Ginsburg 1961; Kuss 1965; 100 cm above the base of the section. All material is Viranta 1996). It was widespread throughout Europe in the housed in the Bayerische Staatssammlung fu¨r Pala¨ontolo- Early and Middle Miocene (see NOW) but is also cited gie und Geologie, Munich, Germany (BSPG). The from the early Middle Miocene of Africa (Morales et al. collection numbers of all specimens start with ‘‘BSPG 1959 1998). II,’’ which is omitted in the following text. Lower teeth are Amphicyon cf. major Blainville, 1841. referred to by lower letters, as in ‘‘m1’’, uppers by capitals, Synonymy list: for complete list see Kuss (1965) and as in ‘‘P4’’, lower canines as ‘‘c inf.’’ and upper canines as Viranta (1996). ‘‘C sup.’’. Measurements were taken with callipers to the *1841 Amphicyon major Blainville: pl. 14. closest 0.1 mm. Description of tooth morphology of Material: 8106: right maxillar fragment with alveoli of Amphicyon follows Peigne´ and Heizmann (2003); all others M1-M2; 8241: upper incisor; 8100: left C sup.; 2222: right follow Thenius (1989). C sup.; 2198: right C sup.; 8101: left C sup., strongly worn; The following description focuses on the dental mate- 9012: left C sup., strongly worn and crown broken; 2202: rial. Postcranial material is evaluated if the taxonomic right P4 with fourth root below metacone blade (Figs. 1a, assignment was clear. The remaining postcranial material 11f–h); 2224: left P4; 2225: right P4, strongly worn; 8099: needs further investigation. left M1 (Fig. 1c); 2213: right M1, buccal-posterior root missing, worn (Fig. 11i); 8097: right M1, strongly worn; 8102: right M1, buccal part broken; 16202: left M1; 2226: Systematic palaeontology right M1 (Fig. 1b); 8103: right M1 fragment; 88: right M2; 8220: right M2, buccal root broken; 8098: right M2 Order Carnivora Bowdich, 1821. (Fig. 11J); 8222: right M3. 8095: right lower jaw fragment Family Amphicyonidae Trouessart, 1885. with m1 and m2 in place, p4 attached (Fig. 11d); 8096: Subfamily Amphicyoninae Trouessart, 1885. right lower jaw fragment with alveoli for p2-m3, c inf. Fig. 1 Amphicyon cf. major Blainville, 1841. a 2202, right P4; b 2226, right M1; c 8099, left M1; d 2235, left m3; all occlusal views 123 The carnivoran community from the Miocene of Sandelzhausen (Germany) 153 alveolus is broken; 2200: left lower jaw fragment with m1 information about the presence of a p1. Both mandibles and m2 in place (Fig. 11a–c); 2199: right c inf.; 2231: right show alveoli for p2 and p3, with at most a very small c inf., crown broken; 8223: left p4; 2227: right m1 with diasteme between the premolars. The p4 (2200) has no metaconid and talonid; 2236: right m1, only metaconid and anterior cusp and a posterior cusp is close to the main cusp. talonid preserved; 8224: right m1 fragment; 2214: left m2; The whole tooth is asymmetrical and broader at its pos- 2233: right m2; 8082: left m3 (Fig. 11E); 2235: right m3; terior end. The m1 consists of a paraconid lower than the 2229: left m3; 2244: right m3; 3938: left m3 fragment; protoconid and a metaconid which is very close to the 3717: right femur; 2201: left femur (Fig. 2t–u); 8247: right protoconid, but does not lean further back than the main radius (Fig. 2r, s); 2204: right calcaneus (Fig. 2p, q); 2223: cusp; therefore, it is not visible in buccal view. The talonid left calcaneus; 8249: right calcaneus; 2203: left astragalus carries a prominent hypoconid, which is separated from the (Fig. 2n, o); 8107: left astragalus (Fig. 2l, m); 8256: right entoconid by a narrow groove. Paraconid, protoconid, and Mc1; 2242: left Mc2; 8258: right Mc4; 2240: left Mc5; hypoconid are more or less in line for trenching. In 8095, 2241: right Mc5; 8159: right Mt1 (Fig. 2d, h); 8169: right the enamel of m1 is slightly rugose. The double-rooted m2 Mt2 (Fig. 2c, g, k); 2228: left Mt2; 2243: right Mt3 has no paraconid; the protoconid and the metaconid are (Fig. 2b, f, j); 8173: right Mt4 (Fig. 2a, e, i); 8340: right equal in size with the protoconid being placed further Mt4 fragment; 16218: right Mt4 fragment; 2215: right Mt5; forward than the metaconid. The talonid of the m2 is about 8257: left tarsale 3; 2205, 2238, 8104, 8152, 8157, 8177, the same size as the front part of the tooth with a hypoconid 2239, 8264, 8265, 8266 and 8342: phalange 1; 8163, 8164, on its buccal side and no entoconid in the lingual part. The 2218, 2245, 2248, 2249, 8349 and 8370: phalange 2; 2220 single-rooted m3 carries a protoconid with a crest leading and 2232: last digit. from the anterior part of the tooth to the posterior end with Description: From the upper jaw, only single teeth are no indication of a hypoconid. The talonid is basined and present. The protocone of P4 is very weakly developed. may carry two very small cusplets in the middle (8082) or a Especially in 2225 and on 2202 (Fig. 1a) a swelling on the very small s-like crest (2235). The whole tooth is sur- buccal-exterior part indicates a parastyle. The metastyle rounded by the crest, which extends anteriorly and blade is approximately of the same length as the paracone. posteriorly from the protoconid, by a crest coming from the 2202 carries a fourth root close to the one under the antero-lingual part, extending over the small metaconid metastyle root (Fig.
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