Geologic formation in Texas, United States
TheLueders Formation is ageologic formation inTexas . It is the top formation of theAlbany Group and preservesfossils dating back to thePermian period .[ 1]
Helicoconchus elongatus , a microconchid from the Lueders Formation of Texas.At the time of deposition, a broad sea connected to thePanthalassic Ocean covered much of the central United States, including Texas. The Lueders Formation would have been located in thenorthern tropics orsubtropics . Climatically, after the retreat of an earlyArtinskian glacial maximum , the deserts of theNorth American craton experienced fluctuation and growth during this time period, and the associated aridity decrease impacted seabed deposition in localities across the basin.[ 2]
Depositional environment [ edit ] The Lueders Formation represents adeltaic environment, with terrestrial sediments being deposited onto the muddy bottom of a shallowestuary by shifting freshwater streams. In the Maybelle Member, thedolomite likely representsmarine deposits, preserving marine sharks and fish, whereas darker terrestrial sediments and freshwatershale deposits contain remains of land animals and freshwater fish respectively.[ 3]
Bryozoans reported from the Lueders FormationGenus Species Presence Material Notes Images Bryozoa indet.Indeterminate WSU 1430.[ 2] A fragmentary bryozoan.
Echinoderms reported from the Lueders FormationGenus Species Presence Material Notes Images Crinoidea indet.Indeterminate Columnal (WSU1405A).[ 2] A fragmentarycrinoid .
^a b c d e "Geolex — Lueders publications" .ngmdb.usgs.gov . Retrieved2023-07-25 .^a b c d e f g h i j k Shell, Ryan; Peterman, David; Ciampaglio, Charles; Armstrong, Adam; Laurene Fuelling (2020)."A fossil molluscan fauna from the lower Lueders Formation of north-central Texas" .doi :10.13140/RG.2.2.15600.81924 . {{cite journal }}:Cite journal requires|journal= (help ) ^a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae Dalquest, Walter W.; Kocurko, M. John (1986)."Geology and Vertebrate Paleontology of a Lower Permian Delta Margin in Baylor County, Texas" .The Southwestern Naturalist .31 (4):477– 492.doi :10.2307/3671702 .ISSN 0038-4909 .JSTOR 3671702 . ^a b Carlson, Keith J. (1999)."Crossotelos, an Early Permian Nectridean Amphibian" .Journal of Vertebrate Paleontology .19 (4):623– 631.ISSN 0272-4634 .JSTOR 4524033 . ^a b c d Berman, David S. (1968)."Lungfish from the Lueders Formation (Lower Permian, Texas) and the Gnathorhiza-Lepidosirenid Ancestry Questioned" .Journal of Paleontology .42 (3):827– 835.ISSN 0022-3360 .JSTOR 1302378 . ^a b c Dalquest, Walter W.; Kocurko, M. John (1988)."Notes on Permian Fishes from Lake Kemp, Baylor County, Texas, with a Synopsis of Texas Palaeonisciform Fishes" .The Southwestern Naturalist .33 (3):263– 274.doi :10.2307/3671755 .ISSN 0038-4909 .JSTOR 3671755 . ^ Schaeffer, Bobb; Dalquest, Walter Woelber (1978)."A palaeonisciform braincase from the Permian of Texas, with comments on cranial fissures and the posterior myodome" .American Museum Novitates (2658).hdl :2246/5327 . ^ Dalquest, Walter W. (1966)."An Unusual Paleonisciform Fish from the Permian of Texas" .Journal of Paleontology .40 (3):759– 762.ISSN 0022-3360 .JSTOR 1301762 . ^a b c d Johnson, Gary D. (1981)."Hybodontoidei (Chondrichthyes) from the Wichita-Albany Group (Early Permian) of Texas" .Journal of Vertebrate Paleontology .1 (1):1– 41.ISSN 0272-4634 .JSTOR 4522833 . ^ Johnson, Gary D. (2008-04-22)."Dentitions of Barbclabornia (new genus, Chondrichthyes: Xenacanthiformes) from the Upper Palaeozoic of North America" .Fossil Record .6 (1):125– 146.doi :10.1002/mmng.20030060106 ^a b c Johnson, G. D. (1999). "Dentitions of Late Palaeozoic Orthacanthus species and new species of ?Xenacanthus (Chondrichthyes: Xenacanthiformes) from North America".Acta Geologica Polonica .S2CID 128796206 . ^a b Allen, Joel G.; Feldmann, Rodney M. (2005)."Panduralimulus babcocki n. gen. and sp., a New Limulacean Horseshoe Crab from the Permian of Texas" .Journal of Paleontology .79 (3):594– 600.ISSN 0022-3360 .JSTOR 4095027 . ^ Miller, A. K.; Kemp, Augusta Hasslock (1947)."A Koninckioceras from the Lower Permian of North-Central Texas" .Journal of Paleontology .21 (4):351– 354.ISSN 0022-3360 .JSTOR 1299305 . ^a b Mamay, Sergius H. (1966)."Tinsleya, a new genus of seed-bearing callipterid plants from the Permian of north-central Texas" .Geological Survey Professional Paper :1– 15. ^ Mamay, S H; Mamay, S. H. (1986)."New species of Gigantopteridaceae from the lower Permian of Texas" .Phytologia .61 :311– 315.doi :10.5962/bhl.part.6538 ISSN 0031-9430 .
Texas
United States
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