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919 results for “Fossil species”
FIGURE 2 in Oribatid mite fossils from pre-Quaternary sediments in Slovenian caves III. Two new species of Dissorhina (Oppiidae) from the Pliocene
FIGURE 2: Dissorhina paleokrasica n. sp.: A – ventral view; B – sensillus; C – prodorsal setae; D – notogastral setae; E – leg I. Scale bar: A – 100 µm, B–E – 50 µm. Acronyms: tr III – trochanter of leg III, tr IV – trochanter of leg IV. Setae and lyrifissurae are labelled by name.
Figure 1 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 1. Map showing the distribution of extant and extinct Coracii.
Hidden species diversity in an iconic living fossil vertebrate
<p><span>Ancient, species-poor lineages persistently occur across the Tree of Life. These unique lineages are likely to contain unrecognized species diversity masked by the low rates of morphological evolution that characterize living fossils. Halecomorphi is a lineage of ray-finned fishes that diverged from its closest relatives over 200 million years ago and is represented by only one living species in eastern North America, the Bowfin <em>Amia calva Linnaeus</em>. We use double digest restriction-site associated DNA (ddRAD) sequencing and morphology to illuminate recent speciation in bowfins. Our results support the delimitation of a second living species of <em>Amia </em>with the timing of diversification dating to the Plio-Pleistocene. This delimitation expands the species diversity of an ancient lineage that is integral to studies of vertebrate genomics and development, yet is facing growing conservation threats driven by the caviar fishery.</span></p>
Data from: Too much of a good thing? Supplementing current species observations with fossil data to assess climate change vulnerability via ecological niche models
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Data from: Dietary specialization is linked to reduced species durations in North American fossil canids
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Data for: Reliable biogeography requires fossils: Insights from a new species-level phylogeny of extinct and living carnivores
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Hidden species diversity in an iconic living fossil vertebrate
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Preservation biases in the fossil record distort species ecological niche and distribution models
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FIGURES 1–2 in A new fossil species of Bolitophagini (Coleoptera: Tenebrionidae) from Baltic amber suggests the genus Eledonoprius Reitter is persistent in the Western Palaearctic since the Tertiary
FIGURES 1–2. Eledonoprius incoronatus sp. nov., holotype: 1 – habitus, dorsal view; 2 – habitus, lateral view. Scale bars represent 0.5 mm.
FIGURES 10–12 in The first described fossil species of Litargus Erichson (Coleoptera: Mycetophagidae) from Eocene Baltic amber examined with X-ray microtomography, and new records of Crowsonium succinium Abdullah, 1964
FIGURES 10–12. Micro-CT rendering of Litargus (Litargosomus) dantiscensis sp. nov., holotype, No UCPUwB 260, habitus: 10—left lateral view; 11—right lateral view; 12—ventral reconstruction without legs. Scale bar represents 1.0 mm.
FIGURES 6–9 in The first described fossil species of Litargus Erichson (Coleoptera: Mycetophagidae) from Eocene Baltic amber examined with X-ray microtomography, and new records of Crowsonium succinium Abdullah, 1964
FIGURES 6–9. Micro-CT rendering of Litargus (Litargosomus) dantiscensis sp. nov., holotype, No UCPUwB 260, habitus: 6—dorsal view; 7—ventral view; 8—frontal view; 9—caudal view. Scale bar represents 1.0 mm.
FIGURES 13–15 in The first described fossil species of Litargus Erichson (Coleoptera: Mycetophagidae) from Eocene Baltic amber examined with X-ray microtomography, and new records of Crowsonium succinium Abdullah, 1964
FIGURES 13–15. Photomicrograph of Crowsonium succinium Abdullah, collection number AWI-066 [CVIA]: 13—habitus, dorsal view; 14—habitus, ventral view; 15—apical portion of aedeagus, dorsal view. Total body length is 2.5 mm. Not reproduced to the same scale.
FIGURES 4–5 in The first described fossil species of Litargus Erichson (Coleoptera: Mycetophagidae) from Eocene Baltic amber examined with X-ray microtomography, and new records of Crowsonium succinium Abdullah, 1964
FIGURES 4–5. Photomicrographs of Litargus (Litargosomus) dantiscensis sp. nov., holotype, No UCPUwB 260: 4—forebody in dorsal view; 5—details of elytra in ventral view showing punctation and setation. Abbreviations: a2–a11—antennomeres 2–11, respectively; ap—apical maxillary palpomere; cl—clypeus; e—compound eye; fcs—frontoclypeal suture; lab—labrum; bpi—basal pronotal impression. Scale bars represent 0.25 mm.
FIGURES 1–3 in The first described fossil species of Litargus Erichson (Coleoptera: Mycetophagidae) from Eocene Baltic amber examined with X-ray microtomography, and new records of Crowsonium succinium Abdullah, 1964
FIGURES 1–3. Photomicrographs of Litargus (Litargosomus) dantiscensis sp. nov., holotype, No UCPUwB 260: 1—habitus in dorsal view; 2—habitus in ventral view; 3—habitus in left lateral view (3). Scale bars represent 1.0 mm.
FIGURE 5. Decapods from the Moeshima Silt Bed. A in Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae)
FIGURE 5. Decapods from the Moeshima Silt Bed. A, Munida sp., MFM145609, dorsal view of carapace. B, C, Tymolus un-
FIGURE 2 in Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae)
FIGURE 2. Lithstratigraphic division of the Moeshima Silt, Moeshima Shell and Shinjima Shirasu beds (modified from Yamanaka et al. 2010; Moriwaki et al. 2017), and columns showing the present study. Some 14C dates reported by Kameyama et al. (2005) and Yamanaka et al. (2010) were not calibrated, and those that had been obtained from molluscan shells were adjusted against Marine20 (Heaton et al. 2020) using CALIB8.2 software.
FIGURE 3 in Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae)
FIGURE 3. Calliax nishiki sp. nov. A, MFM142024, holotype, P1 left chela; A1, outer lateral view; A2, inner lateral view; A3, upper view; A4, lower view. B, MFM142025, paratype, P1 left chela; B1, outer lateral view; B2, inner lateral view; B3, upper view; B4, lower view. C, MFM142026, paratype, P1 right chela, outer lateral view. D, MFM142027, paratype, P1 left chela, outer lateral view. E, MFM142028, paratype, P1 right chela, outer lateral view. F, MFM142029, paratype, P1 right chela, outer lateral view. G, MFM142030, paratype P1 right chela, outer lateral view. H, MFM142031, paratype, P1 right dactylus; H1, outer lateral view; H2, inner lateral view; H3, upper view; H4, lower view. I, MFM142032, paratype, P1 left dactylus; I1, outer lateral view; I2, inner lateral view; I3, upper view; I4, lower view. J, MFM142033, paratype, P1 right dactylus; J1, outer lateral view; J2, inner lateral view; J3, upper view; J4, lower view. K, MFM142034, paratype, P1 left carpus, outer lateral view. L, MFM142035, paratype, P1 right carpus, outer lateral view. M, MFM142036, paratype, P1 left carpus, outer lateral view. N, MFM 142037, paratype, P1 left carpus, merus and ischium, outer lateral view. O, MFM142038, P1 right merus, outer lateral view. P, MFM142039, P1 left merus, outer lateral view. Q, MFM142040, P1 right merus, outer lateral view. R, MFM142041, P1 right ischium, outer lateral view. S, MFM142042, P1 right ischium, outer lateral view. All scale bars indicate 1.0 mm.
FIGURE 4 in Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae)
FIGURE 4. Reconstruction of first cheliped of Calliax nishiki sp. nov., based on the type specimens.
FIGURE 6. Decapods from the Moeshima Shell Bed. A–J in Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae)
FIGURE 6. Decapods from the Moeshima Shell Bed. A–J, Laticallichirus grandis (Karasawa & Goda, 1996); A, 145597, lateral view of left major cheliped; B, MFM145598, lateral view of right major cheliped; C, MFM145599, lateral view of right carpus; D, MFM145600, lateral view of left minor cheliped; E, MFM145601, lateral view of right dactylus; F, MFM145602, lateral view of right dactylus; G, MFM145603, lateral view of right dactylus; H, MFM145604, lateral view of left dactylus; I, MFM145605, lateral view of right merus; J, MFM145606, lateral view of left merus. K, Paguridae gen. et sp. indet., MFM145607, lateral view of fragment of the fixed finger. L, Pagurus cf. megalops (Stimpson, 1858b), MFM 145608, lateral view of left cheliped. M, Ebalia tuberculosa (A. Milne-Edwards, 1873), MFM145612, dorsal view of carapace. N, Myra sp., MFM145613, lateral view of fragment of the merus. O, Philyra cf. syndactyla Ortmann, 1892, MFM145614, lateral view of right cheliped. P, Majidae gen. et sp. indet., MFM145615, dorsal view of fragment of the carapace. Q, Leptomithrax sp., MFM 145616, lateral view of left cheliped. R, Romaleon sp., MFM 145617, lateral view of fragment of the dactylus. S, Charibdis sp. MFM145619, lateral view of fragment of the fixed finger. Scale bars of A–H, K, M, O, Q and S indicate 5.0 mm, and I, J, L, N, P and R indicate 1.0 mm.
Data from: Appraisal of the fossil record of Homarus (nephropid lobster), with description of a new species from the upper Oligocene of Hungary and remarks on the status of Hoploparia
The fossil record of the clawed lobster genus, Homarus, is appraised. The taxonomic history of Homarus and Hoploparia is summarized, and a list of species recognized for each is provided. A tabulation of all fossil species of the family Nephropidae permits assessment of nephropid species diversity through time. A new species of Homarus, H. hungaricus, is recorded from the upper Oligocene (Chattian) Mány Formation at Mány, northern Hungary. The species is known by a single specimen consisting of a partial cephalothorax, a pleon minus telson, and partial chelipeds. Homarus is now known by two extant species (H. americanus and H. gammarus) and six fossil taxa, one of Early Cretaceous (Albian; H. benedeni) and five of Cenozoic age (H. hungaricus n. sp., H. klebsi, H. lehmanni, H. morrisi, and H. percyi). The new fossil Homarus differs from modern congeners in aspects of carapace and pleon ornamentation and, especially, cutter claw shape. This is the fourth Oligocene occurrence of a nephropid species; all are Homarus and all are from Western Europe. Homarus makes its appearance in the fossil record in the Early Cretaceous (Albian) and then is not known again until the Paleogene, despite the fact that nephropid lobsters in general are well known from the Late Cretaceous. Nephropid lobsters are better known from the Cretaceous than from the Cenozoic. Both raw species numbers and numbers corrected (normalized) for epicontinental sea coverage show that shelf-dwelling nephropid lobsters were most diverse during the Late Cretaceous.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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