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10 results for “Margaritiferidae”
Figure 10 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 10. Fossil-calibrated multi-locus ultrametric chronogram of the Margaritiferidae (after Lopes-Lima et al. (2018) with our additions). Bars indicate 95% confidence intervals of the estimated divergence times between lineages (Ma). Black numbers near nodes are mean ages (Ma). Stratigraphic chart according to the International Commission on Stratigraphy, 2015. Fossil species under discussion are in red. We illustrated a putative phylogenetic placement of fossil species, i.e. Pseudunio flabellatus (Goldfuss, 1837) comb. rev. as a stem lineage (MRCA of P. auricularius - P. homsensis clade) and P. flabellatiformis (Grigorowitch-Beresowski, 1915) comb. rev. as an extinct lineage (red branch with X-shaped terminal mark indicating an extinction event in the Late Pleistocene) related to P. auricularius and P. homsensis.
Figure 8 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 8. Teeth morphology of recent and fossil Pseudunio taxa: A) P. auricularius from the Indre River near Huismes commune, Loire Basin, France (SMF, voucher no. 307623); B) P. homsensis from the Nahr al-Kabir al-Janoubi River near Harida, Syria (SMF, voucher no. 83160); C) P. flabellatiformis comb. rev. from the Sucleia outcrop, paleoDniester River valley, Middle Pleistocene, Moldova (RMBH, voucher no. Sc1). Scale bars = 10 mm. Photos: Artem A. Lyubas and Ilya V. Vikhrev.
Figure 7 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 7. Shells of the recent Pseudunio homsensis (Lea, 1865): A) Orontes River near Homs, Syria (SMF, voucher no. 4450); B) Orontes River near Homs, Syria (SMF, voucher no. 345464); C) Orontes River near Homs, Syria (SMF, voucher no. 15263); D) Nahr al-Kabir al-Janoubi River near Harida, Syria (SMF, voucher no. 83160) E) Nahr al-Kabir al-Janoubi River near Tell Kalat, Syria (SMF, voucher no. 5156); F) Orontes River near Homs, Syria (SMF, voucher no. 4548). Scale bar = 20 mm. Photos: Ilya V. Vikhrev.
Figure 4 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 4. Subfossil shells of Pseudunio flabellatiformis (Grigorowitch-Beresowski, 1915) comb. rev. from the outcrop of the Middle Pleistocene riverine deposits near Sucleia village, paleo-Dniester River valley, Transnistria, Moldova: A) specimen no. 1 (RMBH); B) specimen no. Sc1 (RMBH); C) specimen no. Sc5 (RMBH); D) specimen no. Sc8 (RMBH); E) specimen no. Sc12 (RMBH); F) specimen no. Sc13 (RMBH). Scale bar = 20 mm. Photos: Artem A. Lyubas.
Figure 6 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 6. Shells of the recent Pseudunio auricularius (Spengler, 1793): A) Indre River near Huismes commune, Loire Basin, France (SMF, voucher no. 307623); B) Ebro River near Cenicero, La Rioja, Spain (MNCN, voucher no. 15.07/197); C) Loire River upstream of Champtoceaux commune, Maine-et-Loire, France (SMF, voucher no. 307850); D) Garonne River, France (MNCN, voucher no. 15.07/178); E) Indre River near Huismes commune, Loire Basin, France (SMF, voucher no. 307623); F) Ebro River near Amposta city, Tarragona, Spain (MNCN, voucher no. 15.07/10366). Scale bar = 20 mm. Photos: Artem A. Lyubas & Ilya V. Vikhrev.
Figure 5 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 5. Scatter plot of PCA based on the shell measurements of our Pseudunio sample from the Sucleia locality and the type series of fossil nominal taxa from the Speya and Blizhniy Khutor localities (Chepalyga, 1964, 1965). The component 1 and component 2 accounted for 98.8% and 1.0% of the total variance, respectively.
Figure 3 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 3. Distribution ranges of Pseudunio taxa. The range of each species is illustrated based on the corresponding river drainages: 1 – former range of P. auricularius based on fossil and recent records (Araujo and Moreno, 1999; Araujo and Ramos, 2001; Prie et al., 2018); 2 – range of P. homsensis based on recent records (Vikhrev et al., 2017); 3 – range of P. marocanus based on recent records (Lopes-Lima et al., 2018); 4 – former range of P. flabellatiformis with its synonyms (M. moldavica syn. nov., M. robusta robusta syn. nov., M. robusta speensis syn. nov., and M. robusta tirassica syn. nov.) based on fossil records (Bogatchev, 1961; Chepalyga, 1964, 1965, 1967; Bolotov et al., 2016). Stars indicate records of P. flabellatiformis from the Pliocene (blue) and Pleistocene (red) deposits of Southeastern Europe (Bogatchev, 1961; Chepalyga, 1964, 1965, 1967; Bolotov et al., 2016).
Figure 2. Subfossil riverbed substrate with a in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 2. Subfossil riverbed substrate with a Pseudunio flabellatiformis shell, Sucleia outcrop, paleo-Dniester River valley, Middle Pleistocene, Moldova. Scale bar = 100 mm. Photo: Teodor F. Obada.
Figure 9 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 9. Mantle attachment scars on the inner side of subfossil shell of Pseudunio flabellatiformis comb. rev. from the Sucleia outcrop, paleo-Dniester River valley, Middle Pleistocene, Moldova (RMBH, voucher no. Sc5). Scale bar = 10 mm. Photo: Artem A. Lyubas.
Figure 1 in A taxonomic revision of fossil freshwater pearl mussels (Bivalvia: Unionoida: Margaritiferidae) from Pliocene and Pleistocene deposits of Southeastern Europe
Figure 1. Stratigraphic profile of the Sucleia outcrop, paleo-Dniester River valley, Middle Pleistocene, Moldova. The thickness of outcrop in the studied area is 4.6 m. Layers: (1) 0 -40 cm – light-yellow sand with small pebbles; 2) 40-290 cm – light-brown gravel with gray sand and Pseudunio shells; 3) 290-370 cm – coarse pebble with sand and numerous Pseudunio shells; 4) 370-460 cm – pebble with light-brown sand and Pseudunio shells. Photo: Teodor F. Obada.
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