Search the Community
Showing results for tags 'Anisian'.
-
A remarkable marine archosauromorph from the Middle Triassic of southwestern China
Oxytropidoceras posted a topic in Fossil News
Fossil reveals 240 million year-old dragon' By Victoria Gill, BBC News, February 22, 2024 The open access paper is: Spiekman, N.S.F., Wang, w., Zhao. L., Rieppell, O., Fraser, N.C, and Li, C., 2024, Dinocephalosaurus orientalis Li, 2003: a remarkable marine archosauromorph from the Middle Triassic of southwestern China. Earth and Environmental Science Journal Transactions of The Royal Society of Edinburgh , First View Published online by Cambridge University Press: 23 February 2024, pp. 1-33. A related paper is: Lu, Y.T. and Liu, J., 2023. A new tanystropheid (Diapsida: Archosauromorpha) from the Middle Triassic of SW China and the biogeographical origin of Tanystropheidae. Journal of Systematic Palaeontology, 21(1), p.2250778. More related papers Yours, Paul H.- 3 replies
-
- 2
-
-
- anisian
- archosauromorpha
- (and 5 more)
-
Taxonomy from Fossilworks.com. Xu & Wu 2012, p. 112: "Etymology: The generic name is derived from kyphos (Greek), meaning bent and referring to its lumped back, and ichthys (Greek), meaning fish. The species name honors Lance Grande for his recent, valued contribution to the study of the Ginglymodi." Emended diagnosis from Sun & Ni, 2017, p. 3: "(Possible autapomorphies marked with *). Small- to medium-sized, deep-bodied ginglymodian with a remarkable hump between head and dorsal fin (juveniles much more rounded, without the hump). A short, broad, squarish rostral bone; the dorsalmost suborbital bone(s) separating preopercle from dermopterotic bone; two anterior infraorbital bones; seven infraorbital bones between antorbital and dermosphenotic bones; infraorbital bone at the posteroventral corner of the orbit enlarged posteriad, reaching the anterior margin of the preopercle and laterally covering the quadrate; a large splint-like quadratojugal lateral to the quadrate; a short maxilla with a deep supramaxillary notch; two pairs of extrascapular bones; a rounded median gular plate. A compound first pectoral ray fused with basal and fringing fulcra; dorsal and anal fins far posteriorly located, with the insertion of dorsal fin five/six scale rows behind that of the anal fin; presence of scale-like fin rays. A complete scale row bordering the posterior margin of the dorsal body lobe, lacking additional incomplete scale rows. Scales smooth on the surface except for the anterior flank scales which are ornamented with ganoine ridges; posterior margin of scales with spare serrations. Pterygial formula of (D20-21/P7-9A16C25)T29-30." Line drawing from Sun & Ni, 2017, p. 4: References: Xu & Wu, (2012). A deep-bodied ginglymodian fish from the Middle Triassic of eastern Yunnan Province, China, and the phylogeny of lower neopterygians. Chinese Science Bulletin, January 2012 Vol.57 No.1: 111-118. http://www.springerl...28/fulltext.pdf Sun, Z., & Ni, P. (2017). Revision of Kyphosichthys grandei Xu & Wu, 2012 from the Middle Triassic of Yunnan Province, South China: implications for phylogenetic interrelationships of ginglymodian fishes. Journal of Systematic Palaeontology, 16(1), 67–85. doi:10.1080/14772019.2016.1269049
-
Hi all, We spent yesterday in a different section of the quarry I posted about here. This section yielded some nice fish, plants and even another temnospondyl! Phyllotheca or a different horsetail Xenacanthid pieces Various fish bits A nice nodule with a fish inside I will post some more photos of the temnospondyl once it gets excavated, but here is a loose section from the rear of the skull. After our quarry visit we went to a terrific Eocene plant locality, will post some photos from there next!
.thumb.jpg.8e7e1e1e4dac6027372b6a9826697176.jpg)
.thumb.jpg.2964c0273681dbd0f40c86ab03bb5ec6.jpg)
.thumb.jpg.3081d9dffbd4ec203cdf71e0291bab07.jpg)
- 6 replies
-
- 15
-
-
- anisian
- ashfield shale
- (and 6 more)
-
Taxonomy from Fossilworks.org. Etymology: From Luoping County (Yunnan Province, South China), where the new fossiliferous site yielding these specimens is located; dedicated to Lev Semenovich Berg (1876—1950), a famous geographer and biologist, member of the Academy of Sciences of the USSR, for his great contributions to the study of fossil fishes. Diagnosis for the genus from Sun et al. 2009, p. 462: “Fusiform to deep fusiform polzbergid. Preopercular sickle-shaped, with a short infraorbital process, a vertically oriented dorsal region and an expanded, anteriorly curved, ventral one. Premaxillary, extending antero-dorsally to the maxillary for at least 2/3 of its length; thin procumbent anterior teeth. No field of modified scales at the base of anal fin. Caudal fin with four or five epaxial rays." Diagnosis for the species from Sun et al. 2009, p. 462: "Medium-sized Luopingichthys, with a fusiform body. Six teeth borne by premaxillary, three or four by maxillary and six by dentary. Coronoid(s) present; skull bones heavily ornamented with tubercles, short ridges and small patches of ganoine randomly arranged. Ornamentation on scales reduced to faint longitudinal ridges giving rise to a posterior serration; mid-dorsal ridge scales well differentiated. Stout fringing fulcra on dorsal and anal fins. Caudal fin with rudimentary lepidotrichia and four or five epaxial rays." Drawing of the skull from Sun et al. 2009 (scale bar equals 5mm): References: Z. Sun, A. Tintori, D. Jiang, C. Lombardo, M. Rusconi, W. Hao, and Y. Sun. 2009. A New Perleidiform (Actinopterygii, Osteichthyes) from the Middle Anisian (Middle Triassic) of Yunnan, South China. Acta Geologica Sinica 83(3):460-470.
-
Found recently this specimen in the wider Epidaurus region Greece . The matrix rock as well the as the ammonite is green silicified limestone with jasper pigments or enlosures in some parts . Considered geologically Upper Anisian - Carnian . Morphologically is close to Nevadites but not for sure as I am no expert in identification . Any help to ID welcome
-
Apical side. Taxonomy from fossilworks.org. Diagnosis for the family Serpianotiaridae from Hagdorn 1995, p. 258 (translated from german by oilshale): "Overmedium sized sea urchins with moderately flexible shell. Apical system monocyclic. Ambulacrum narrow, simple above the ambitus, primitively diadematoid below the ambitus, adorally occluded plates; pore pairs uniserial, adorally biserial. Interambulacrum overlapping the ambulacrum, adorally relatively tightly jointed. Primary tubercle crenulate, perforate; adorally rows of large secondary tubercles. Perignathic girdle with promunturium. Lantern cidarid. Primary spines awl-shaped, without cortex; scrobicular spines spatulate." Line drawing from Hagdorn 1995, p. 261: Identified by Dr. H. Hagdorn (Muschelkalkmuseum Ingelfingen). References: Jeannet, A. (1933) Die Triasfauna der Tessiner Kalkalpen, VI: Note sur un Miocidaris nouveau. Abhandlungen der Schweizerischen Palaeontologischen Gesellschaf 53, 1-7, pl. 30. Kier, P.M. (1977) Triassic echinoids. Smithsonian Contributions to Paleobiology 30, 1-88. Hagdorn, H. (1995) Die Seeigel des germanischen oberen Muschelkalks. Geologische und Palaontologische Mitteilungen, Innsbruck. 20, 245-281. Kroh, A. and Smith, A. B. (2010) The phylogeny and classification of post-Palaeozoic echinoids. Journal of Systematic Palaeontology 8(2):147-212.
-
- 4
-
-
-
- anisian
- crailsheim
- (and 4 more)
-
Hello! I am assisting a friend identifying this tooth. He found it in Anisian limestone and so far has not managed to find any further information, since there is not a single publication. The environment is marine, since there are shell imprints, without any shell preserved, so he assumes it belongs to a fish. Another friend said that it might even belong to a reptilian and the teeth have crushing form. It's size is around that of a dime, maybe slightly larger. Any help would be appreciated!
-
Taxonomy according to Xu and Ma, 2018 Junior synonym: Guizhoueugnathus analilepida Liu et al., 2003. Preoccupied name: Guizhouella analilepida Liu et al., 2013. Quote from Xu and Ma (2017, p. 36): “Based on three nearly complete fish specimens …, Liu et al. (2003) named Guizhouella analilepida and referred it to the family Eugnathidae (= Caturidae, Amiiformes); this genus was later renamed as Guizhoueugnathus, because it was preoccupied by a brachiopod genus (Liu, 2004). Jin (2009) first noticed that G. analilepida was a junior synonym of A. shingyiensis, and suggested that this taxon was closely related to parasemionotiforms. Quote from Xu and Ma (2018, pp. 97-98): ”Emended diagnosis: A large-sized ionoscopiform distinguished from other members of this order by the following combination of features: frontal nearly three times as long as parietal; parietal rectangular, slightly longer than wide; supraorbital sensory canal contacting anterior pitline in parietal; dermopterotic 1.3–1.4 times as long as parietal; three (two, occasionally) pairs of extrascapulars; two supraorbitals; dermosphenotic with canal-bearing innerorbital flange; five infraorbitals; two suborbitals; quadratojugal splint-like; supramaxilla single, nearly half of length of maxilla; maxilla with branch of infraorbital sensory canal; maxilla ending at level of posterior margin of orbit; 14 pairs of branchiostegal rays; median gular large and nearly triangular; 15 rays in each pectoral fin; 10–11 principal dorsal rays; 11–12 principal anal rays; 21–23 principal caudal rays; rhomboidal scales with serrated posterior margin; and scale formula of D25–26/P11–13, A22–24, C37–40/T43–45.” Line drawing from Xu and Ma, 2018, p. 100: Identified by oilshale using Xu and Ma, 2017. References: Su, D.-Z. 1959. Triassic fishes from Kueichow, Southwest China. Vertebrata PalAsiatica 3, 205–210. Liu, G. -B., Yin, G. -Z., Wang, X. -H., Luo, Y. -M. and Wang, S. -Y. 2003. New discovered fishes from Keichousaurus bearing horizon of Late Triassic in Xingyi of Guizhou. Acta Palaeontologica Sinica 42, 346–366. Liu, G. -B. 2004. Change names: Guizhoueugnathus, new name for Guizhouella Liu, 2003 and Guizhoubrachysomus, new name for Brachysomus Liu, 2003. Acta Palaeontologica Sinica 43, 447. Jin, F. 2009. Fishes. In: Li, J. -L. and Jin, F. (Eds.), Swim in the ocean two hundred million years ago. Ocean Press, Beijing. pp. 99–121. Xu, G. H. and Ma, X. Y. (2017): Taxonomic revision of Asialepidotus shingyiensis Su, 1959 (Halecomorphi, Holostei) from the Middle Triassic (Ladinian) of Guizhou and Yunnan, China. Research & Knowledge 3:36-38 Xu, G. H. and Ma, X. Y. (2018): Redescription and phylogenetic reassessment of Asialepidotus shingyiensis (Holostei: Halecomorphi) from the Middle Triassic (Ladinian) of China. The Linnean Society of London, Zoological Journal of the Linnean Society, 184, 95–114.
-
- 1
-
-
- anisian
- asialepidotus
- (and 6 more)
-
The fish was described in 2011 by López-Arbarello et al. under the name Sangiorgioichthys sui and transferred by Xu et al. in 2019 to the newly erected genus Lanshanichthys. Alternative combination: †Sangiorgioichthys sui López-Arbarello et al. 2011. Taxonomy according to Fossilworks.org. Diagnosis for the genus Lanshanichthys from Xu et al 2019, p. 185: “Nasal narrow and curved; frontal 1.8 times as long as parietal; presence of two to four supraorbitals; seven or eight infraorbitals, including two or three between lacrimal and posteroventral infraorbital; three or four suborbitals, separated by posteroventral infraorbital into two or three dorsal ones and single ventral one; presence of preopercle/ dermopterotic contact; supramaxilla nearly half of length of maxilla (excluding anteromedial process); opercle 2.2–3.0 times as deep as subopercle (excluding anterodorsal process); median gular nearly circular, 0.4 times as long as lower jaw; 19–21 principal caudal rays.” Diagnosis of the species Sangiorgioichthys sui according to López-Arbarello et al. 2011, p. 27: “Species of Sangiorgioichthys Tintori and Lombardo, 2007, distinguished by the following combination of features: two pairs of extrascapular bones, the medial paired usually fused to the parietals; maxilla with a complete row of small conical teeth; supramaxilla long, more than half of the length of the maxilla; only two large suborbital bones posterior to the orbit, a dorsal smaller and a ventral much larger elements; flank scales with finely serrated posterior borders. " Description of the species Sangiorgioichthys sui according to López-Arbarello et al. 2011, p. 28: “Resembling the other species of this genus, Sangiorgioichthys sui n. sp. is a rather small and fusiform fish (Fig. 2). The standard length (SL) of the holotype is 81 mm, the total length being >105 mm and the maximum body-depth 30 mm: the ratio of body-length vs. body-depth is 3.5. The orbit is about 9 mm, 32% of the head length. The studied specimens vary between 42 mm and 124 mm SL. The length of the head ranges between 29–43 % of the SL, showing a nice negative correlation with the size of the specimens, i.e. the smaller individuals have larger heads and vice versa (Fig. 3: HL/SL). The opposite trend is observed in the depth of the body, which ranges between 34–49% of the SL from smaller to larger individuals (Fig. 3:BD/SL).” Reconstruction according to López-Arbarello et al. 2011, p. 28: Identified by oilshale using López-Arbarello et al. 2011. References: López-Arbarello, A., Sun, Z. Y., Sferco, E., Tintori, A., Xu, G. H., Sun, Y, L., Wu F. X., and Jiang, D. Y. (2011): New species of Sangiogioichthys Tintori and Lombardo, 2007 (Neopterygii, Semionotiformes) from the Anisian of Luoping (Yunnan Province, South China). Zootaxa 2749:25-39. DOI: 10.11646/zootaxa.2749.1.2 Sun Z. Y., Ni P. G., (2018): Revision of Kyphosichthys grandei Xu & Wu, 2012 from the Middle Triassic of Yunnan Province, South China: implications for phylogenetic interrelationships of ginglymodian fishes. J. Syst Palaeont, 16: 67– 85. DOI: 10.1080/14772019.2016.1269049 Xu G. H., Ma, X. Y., Wu, F. X., and Y. Ren, Y. (2019): A Middle Triassic kyphosichthyiform from Yunnan, China, and phylogenetic reassessment of early ginglymodians. Vertebrata PalAsiatica 57:181-204. DOI: 10.19615/j.cnki.1000-3118.190319
-
- 2
-
-
-
- †lashanichthys
- anisian
- (and 6 more)
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Lepidopteris stormbergensis complex (?) (sensu Holmes et Anderson 2005b)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Cladophlebis sp. with unidentified pollen organ (?)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Dicroidium odontopteroides complex (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Dicroidium odontopteroides complex (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Dicroidium dubium complex (?) (sensu Holmes et Anderson 2005a)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Ginkgoites denmarkensis complex (sensu Holmes et Anderson 2007)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Ginkgoites denmarkensis complex (sensu Holmes et Anderson 2007)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
-
Asterotheca trullensis Holmes 2001 (sterile foliage)
paleoflor posted a gallery image in Member Collections
From the album: Coalmine Quarry (Nymboida, Australia)
© T.K.T. Wolterbeek
.jpg.a070d4f8af06884267a1ef87b52ea7c2.jpg)
.jpg.7621b7efb5bff980514ed1fe041a5fea.jpg)
.jpg.7050eeecf61391cc7df0d3723b9d93e7.jpg)
