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Eodollocaris keithflinti Laville, Haug & Haug, 2021, n. gen., n. sp.
No full textEodollocaris keithflinti Laville, J. T. Haug & C. Haug n. gen., n. sp. (Figs 6; 7) urn:lsid:zoobank.org:act: 1D59F66C-0B63-460B-94AB-F177841EC908 ETYMOLOGY. –— In honor of the late Keith Flint from the band 'The Prodigy'. As the specimen exhibits a certain "aggressiveness" and the fossil is preserved in bright red colour reminding of fire, we herewith tribute to the song 'Firestarter' of the band. TYPE MATERIAL. — Holotype: ROMIP 61586. TYPE HORIZON. — Carbondale Formation, Francis Creek Shale Member, c. 307 Ma, Westphalian D, Middle Pennsylvanian, Carboniferous. TYPE LOCALITY. — Mazon Creek area, Pit 11, Illinois, United States. DIAGNOSIS. — Trapezoidal shield displaying a rounded rostrum, a tube-shaped dorsal midline, a finely tuberculated ventral margin, a dorsal midline ending posteriorly with a spine and a posterior margin with a notch in its dorsal part. Third prominent appendage bearing seven spines on its most distal element. DESCRIPTION Body Largely enveloped by prominent folded shield (Figs 6 A-D; 7A, B). Few structures protruding from it. Exact origin of shield unclear, most likely relatively far anterior, possibly from segments of head. Shield trapezoidal in lateral view; longer than high, about 2.8× (h = 6.13 mm, hp = 4.97 mm; ls = 16.93 mm; lw = 15.23 mm). Antero-dorsal corner drawn out anteriorly into a rostrum with a rounded tip (l = 1.70 mm). The anterior margin is straight, oriented postero-ventrally (c. 30°). No clear optical notch distinguishable. Dorsal midline is slightly convex. Postero-dorsal corner drawn out posteriorly into small spine. Ventral margin is convex. Rim in this region is bearing numerous fine tubercles and appears slightly bent in its central part (Fig. 6F). Posterior margin further dorsally concave forming distinct notch, ventral part straight and oriented antero-ventrally (c. 30°). Dorsal midline connecting the two valves tube-shaped, with numerous pores along the entire dorsal line, terminated by the rostrum (Fig. 6E). Large eyes Anteriorly protruding from under the shield, prominent (l = 0.94 mm; Fig. 6 A-D). Appear to arise from massive proximal stalks. Posterior to eyes, a massive oval structure emerging ventrally from the shield. Exact origin unclear. Two prominent appendages Protruding from under the shield (Figs 6G, H; 7C, D), interpreted as raptorial appendages 2 and 3 (possibly appendages of post-ocular segments 5 and 6 = maxillae? and maxillipeds?). Proximal parts concealed by a tube-shaped structure, probably a part of the body. Raptorial appendage 2 Differentiated into four elements. Element 1 rectangular in lateral view, longer than wide, 1.2× (l = 1.53 mm; w = 1.33 mm). Element 2 rectangular, longer than wide, about 2.1× (l = 1.85 mm; w = 0.87 mm), angled in the specimen at 51° downward from the first article. Element 3 not wellpreserved.Width appears similar to that of preceding element. Element 4 longest (Fig. 6G), thin, longer than wide, 5.6× (l = 3.92 mm; w = 0.70 mm), angled at 50° inward from element 3. Distally bearing two spines on its median margin. First spine smaller (l = 0.79 mm). Second spine very distal. Spine longer than the first one and directed anteriorly. Raptorial appendage 3 Better preserved, longer than raptorial appendage 2. Differentiated into four elements (Fig. 7C, D). Element 1 rectangular, almost square-shaped (l = 2.13 mm; w = 2.03 mm); bearing a stout spine in the central part of the lateral margin (l = 0.38 mm). Element 2 hexagonal in outline, slightly rounded, wider in its central part than at its extremities (wmax = 2.19 mm; wmin = 1.05 mm; l = 1.79 mm). Bearing a spine on central part of lateral and median margin. Lateral spine longer (l = 0.28 mm) than median one (l = 0.16 mm). Element 3 rectangular, longer than wide, about 3.6× (l = 4.27 mm; w = 1.18 mm), angled at 24.3° from element 2. One spine on median margin (l = 0.37 mm). Element 4, distal one, also the longest one (l = 6.32 mm); rectangular, thin and elongated, longer than wide, about 7.2× (w = 0.88 mm), angled at 56.6° anteriorly from element 3. Bears seven spines on median margin (Fig. 7C, D). First one is thin (l = 0.65 mm); second one also thin (l = 0.58 mm), third also thin, longest of the series (l = 0.68 mm); fourth spine shorter (l = 0.44 mm); fifth similar to fourth (l = 0.45 mm); sixth spine shortest (l = 0.20 mm), close to seventh spine. Seventh spine corresponds to distal end of appendage; slightly curved, longer than the previous spine, about 3.2× (l = 0.64 mm). Posterior part of trunk Only the posterior part of trunk is visible. Carrying three appendages. First posterior trunk appendage paddle-like. Second one not well preserved but bearing a spine distally. Third, also paddle-like, arising from end of trunk. REMARKS The new specimen possesses a so far unique combination of characters. The rostrum with a rounded tip seems to be a common feature in Palaeozoic species of Thylacocephala, especially in species of Concavicaris Rolfe, 1961. The presence of such a rostrum has also been suggested to be a diagnostic feature of representatives of the group Ankitokazocaris Arduini, 1990 of the Triassic. However, it differs from known representatives of both groups, Concavicaris and Ankitokazocaris, by the absence of a well-developed optic notch. Also, the new specimen possesses a posterior spine and a posterior notch, both structures are absent in species of Concavicaris and Ankitokazocaris. Yet, they are well known in specimens from younger deposits, such as representatives of Atropicaris Arduini & Brasca, 1984, Dollocaris Van Straelen, 1923 or Mayrocaris Polz, 1994. In these species, the posterior notch occupies the entire posterior margin whereas in the new specimen it is restricted to the dorsal part of the margin. Among the species from younger deposits, especially Paradollocaris vannieri Charbonnier, 2017 shows many similarities concerning shield shape with the new specimen. The shield is trapezoidal with a convex dorsal midline. Anteriorly it is drawn out into a rostrum, which is rounded distally. The posterior end is also drawn out into a spine. The posterior margin also has a pronounced notch. Similar to other species from the Mesozoic, the notch occupies the entire posterior margin. The ventral margin of the new specimen seems unique with the anterior part being tuberculated. Concerning the raptorial appendages, the new specimen exhibits particular differences in form and armature compared to other thylacocephalans from Mazon Creek. Convexicaris mazonensis and Concavicaris georgeorum have less robust appendages, and they do not display any spines. Due to the significant differences of the new specimen we interpret it as a representative of a new, so far unrecognised species: Eodollocaris keithflinti n. gen., n. sp.Published as part of Laville, Thomas, Haug, Joachim T. & Haug, Carolin, 2021, New species of Thylacocephala, Eodollocaris keithflinti n. gen., n. sp., from the Mazon Creek Lagerstätte, Illinois, United States (c. 307 Ma) and redescription of other Mazon Creek thylacocephalans, pp. 295-310 in Geodiversitas 43 (10) on pages 302-303, DOI: 10.5252/geodiversitas2021v43a10, http://zenodo.org/record/474654
Erratum to: Life habits, hox genes, and affinities of a 311 million-year-old holometabolan larva (vol 15, 208, 2015)
No full textCitation: Haug, J. T., Labandeira, C. C., Santiago-Blay, J. A., Haug, C., & Brown, S. (2016). Life habits, hox genes, and affinities of a 311 million-year-old holometabolan larva (vol 15, 208, 2015). Bmc Evolutionary Biology, 16, 6. doi:10.1186/s12862-016-0725-xFollowing the publication of this article [1] it has been brought to the attention of the authors and the editors of BMC Evolutionary Biology that the description of the newly described genus and species Srokalarva berthei did not fully meet the criteria of availability as defined by the ICZN (International Code of Zoological Nomenclature). The species description and accompanying ZooBank identification numbers were contained in an additional file and not in the main manuscript as required under the ICZN code. This addendum is to ensure that the ICZN criteria for the availability of new names are satisfied. The following systematics section is identical to that published as part of additional file 1 of this article [1], but is republished here to ensure its full availability. The date of publication of the nomenclatural acts is the date that this addendum has been published
FIGURE 2 in Another strange holometabolan larva from Kachin amber-the enigma of the beak larva (Neuropteriformia)
No full textFIGURE 2. Comparison of drawings of the different beak larvae and other larvae to illustrate possible ontogenetic changes. A,?Partisaniferus edjarzembowskii sp. nov., beak larva 3, SNHM-6013; scale bar on the lower right. B–D, All known beak larvae at the same scale; note that the larva in B has a much larger body size than those in C and D; scale bar between B and D applies to B–D. B, Possible second specimen of?Partisaniferus edjarzembowskii sp. nov., beak larva 2, based on Haug et al. (2022b). C,?Partisaniferus edjarzembowskii sp. nov., beak larva 3, based on this study. D, Partisaniferus atrickmuelleri, beak larva 1, based on Haug et al. (2020e). E. Enlarged version of D; scale bar on the lower right. F and G, Comparison of first and last larval stage of a representative of Nevrorthidae at the same scale; scale bar under G applies to F and G. F, Last larval stage of Nevrorthus sp. based on Gepp (1984). G. First larval stage based on Haug et al. (2019b). H and I, Comparison of first and last larval stage of a representative of Psychopsidae (Psychopsis elegans) at the same scale based on Tillyard (1918); size provided by magnification factor, hence no scale bar provided. H, Last larval stage. I, First larval stage.Published as part of HAUG, JOACHIM T. & HAUG, CAROLIN, 2022, Another strange holometabolan larva from Kachin amber-the enigma of the beak larva (Neuropteriformia), pp. 276-284 in Palaeoentomology 5 (3) on page 280, DOI: 10.11646/palaeoentomology.5.3.11, http://zenodo.org/record/682074
El Diccionari historicocrític del marxisme: de projecte a realitat
No full textEn el número 73 de la revista L’Espill trobaràs un dossier monogràfic sobre “Literatures ibèriques: visibilitat i reconeixement”, amb contribucions d'Itamar Even Zohar, Elías Torres Feijó, Antonio Monegal, Enrique Santos Unamuno, Cristina Martinez, Santiago Perez Isasi i Jon Kortazar. A més, articles de Murat Metinsoy, Wolfgang F. Haug, Jordi Palafox, Júlia Ojeda, Lourdes Toledo, Antoni Maestre i Pilar Alfonso, així com un full de dietari de Francesc Serés i una conversa amb Jón Karl Helgason, per Simona Skrabec i Jaume Subirana
Επανεφεύρεση της εργασίας: για μια νέα κοινωνική πολιτική στη βάση του νέου τρόπου παραγωγής
No full textΑπό τη στήλη "Αφιέρωμα στον W. F. Haug
Οι τρεις κριτικές: το ουτοπικό πλεόνασμα στη μαρξιστική θεωρία
No full textΑπό τη στήλη "Αφιέρωμα στον W. F. Haug
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