Paleocene fossil wood from Patagonia with storied rays and comments on the fossil record of this character
In: IAWA JournalCátedra de Paleontología II, Facultad de Ciencias Naturales y Museo, UNLP, Calle 122 y 60 s/n, 1900 La Plata, Argentina
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Summary
The storied structure in wood anatomy is considered derived and highly specialized, and is present in some related families. The first records of this character are from the Cretaceous, but it is scarce in the Cretaceous and Paleocene, and apparently absent until the Eocene in the temperate Southern Hemisphere. Using standard methodology, we describe the anatomy of a fossil wood from the early Paleocene of Patagonia (Salamanca Formation). The fossil wood, assigned to a new genus and species Elizabethiaxylon patagonicum related to the Malvaceae, is characterized by its diffuse-porous wood, solitary vessels, simple perforation plates, apotracheal banded axial parenchyma, and mostly biseriate storied rays. The storied structure in this wood is one of the oldest records from Gondwana.
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-
APG IV. 2016. An update of the angiosperm phylogeny group classification for the orders and families of flowering plants: APG IV. Bot. J. Linn. Soc. 181: 1–20. DOI: 10.1111/boj.12385.
-
Awasthi N. 1965. Further studies on the fossil woods from the Cuddalore Series of south India. PhD thesis, Lucknow University, Lucknow. Available upon request from the authors.
-
Awasthi N. 1967. Fossil wood resembling that of Millettia from the Tertiary of south India. Curr. Sci. 36: 180–181.
-
Awasthi N. 1973. Millettioxylon indicum Awasthi, a fossil wood of Leguminosae from the Cuddalore Series of south India. Palaeobotanist 22: 47–50.
-
Awasthi N. 1975. On two new fossil woods resembling Chrysophyllum and Holoptelea from the Cuddalore Series near Pondicherry. Palaeobotanist 24: 21–25.
-
Awasthi N. 1977. Revision of Hopeoxylon indicum Navale and Shoreoxylon speciosum Navale from Cuddalore Series near Pondicherry. Palaeobotanist 26: 102–107.
-
Awasthi N. 1979. Three new leguminous woods from the Cuddalore Series near Pondicherry. Palaeobotanist 26: 157–166.
-
Awasthi N, Prakash U. 1986. Fossil woods of Kingiodendron and Bauhinia from the Namsang beds of Deomali, Arunachal Pradesh. Palaeobotanist 35: 178–183.
-
Awasthi N, Mehrotra RC, Shukla A. 2018. Some new fossil woods from the Cuddalore Sandstone of south India. Palaeobotanist 67: 33–46.
-
Bailey IW. 1923. The cambium and its derivative tissues. IV. The increase in girth of the cambium. Am. J. Bot. 10: 499–509.
-
Bailey IW, Tupper WW. 1918. Size variation in tracheary cells. I. A comparison between the secondary xylems of vascular cryptogams, gymnosperms and angiosperms. Proc. Am. Acad. Arts Sci. 54: 149–204.
-
Beauchamp J, Lemoigne Y. 1973. Description d’une paléoflore du Crétacé terminal-Eocène dans le massif du Chercher (Province d’Harar, Ethiopie). Docum. Lab. Géol. Fac. Sci. Lyon 56: 167–179.
-
Biswas A, Bera M, Khan MA, Spicer RA, Spicer TEV, Acharya K, Bera S. 2020. Evidence of fungal decay in petrified legume wood from the Neogene of the Bengal Basin, India. Fung. Biol. 124: 958–968. DOI: 10.1016/j.funbio.2020.08.003.
-
Boureau E. 1951. Contribution à l’étude paléoxylologique de l’Afrique du Nord (III): Pterocarpoxylon Arambourgii n.gen., n.sp., découvert dans les phosphates ypresiens de Khouribga (Maroc). Bull. Mus. Nat. Hist. Nat., Paris, sér. 2 23: 552–557.
-
Brea M, Zucol AF, Patterer N. 2010. Fossil woods from late Pleistocene sediments from El Palmar Formation, Uruguay basin, eastern Argentina. Rev. Palaeobot. Palynol. 163: 35–51. DOI: 10.1016/j.revpalbo.2010.09.001.
-
Call VB, Tidwell WD. 1988. Fossil wood from the Miocene of Wall Canyon Creek, northwestern Nevada. Am. J. Bot. 75: 104–105.
-
Cantrill DJ, Bamford MK, Wagstaff BE, Sauquet H. 2013. Early Eocene fossil plants from the Mwadui kimberlite pipe, Tanzania. Rev. Palaeobot. Palynol. 196: 19–35. DOI: 10.1016/j.revpalbo.2013.04.002.
-
Carlquist S. 2001. Comparative wood anatomy. Systematic, ecological, and evolutionary aspects of dicotyledon wood. Springer, Berlin.
-
Cheng YM, Wang YF, Liu FX, Jin YG, Mehrotra RC, Jiang XM, Li CS. 2018. The Neogene wood flora of Yuanmou, Yunnan, southwest China. IAWA J. 39: 427–474. DOI: 10.1163/22941932-20170214.
-
Chowdhury KA. 1934. A fossil dicotyledonous wood from Assam. Curr. Sci. 3: 255–256.
-
Chowdhury KA. 1936. A fossil dicotyledonous wood from Assam. Ann. Bot. 50: 501–510.
-
Chowdhury KA, Ghosh SS. 1946. On the anatomy of Cynometroxylon indicum gen. et sp. nov., a fossil dicotyledonous wood from Nailalung, Assam. Proc. Natl. Inst. Sci. India 12: 435–447.
-
Clyde WC, Wilf P, Iglesias A, Slingerland RL, Barnum T, Bijl PK, Bralower TJ, Brinkhuis H, Comer EE, Huber BT, Ibañez-Mejia M, Jicha BR, Krause JM, Schueth JD, Singer BS, Raigemborn MS, Schmitz MD, Sluijs A, Zamaloa MC. 2014. New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene extinction recovery and land mammal age correlations. Geol. Soc. Am. Bull. 126: 289–306. DOI: 10.1130/B30915.1.
-
Crawley M. 1988. Palaeocene wood from the Republic of Mali. Bull. Br. Mus. Nat. Hist. (Geol.) 44: 3–14.
-
De Franceschi D, De Plöeg G. 2003. Origine de l’ambre des facies sparnaciens (Éocène inférieur) du Bassin de Paris: le bois de l’arbre producteur. Geodiversitas 25: 633–647.
-
Delteil-Desneux F. 1981. Sur l’association de trois bois fossiles dans un même gisement tertiaire du Djebel Nara (Tunisie centrale). Rev. Palaeobot. Palynol. 31: 289–310. DOI: 10.1016/0034-6667(80)90032-9.
-
Dupéron J. 1980. Sur un bois de papilionaceae Oligocène de Sud-Ouest de la France. 105e. Congrès National Societés Savantes Caen, Sciences, Fasc. 1: 153–161.
-
El-Saadawi W, Kamal-El-Din MM, Attia Y, El-Faramawi MW. 2011. The wood flora of the Cairo Petrified Forest, with five Paleogene new legume records for Egypt. Rev. Palaeobot. Palynol. 167: 184–195. DOI: 10.1016/j.revpalbo.2011.08.003.
-
El-Saadawi W, Kamal-El-Din M, Wheeler EA, Osman R, El-Faramawi M, El-Noamani Z. 2014a. Early Miocene woods of Egypt. IAWA J. 35: 35–50. DOI: 10.1163/22941932-00000046.
-
El-Saadawi W, Kamal El-Din M, Darwish M, Osman R. 2014b. African Miocene dicot woods with two new records for this epoch from Egypt. Taeckholmia 34: 1–24.
-
El-Saadawi WE, Ziada NA, El-Faramawi MW, El-Din MMK, Loutfy MH. 2017. The Cairo Petrified Forest revisited. Rev. Palaeobot. Palynol. 238: 34–42. DOI: 10.1016/j.revpalbo.2016.12.001.
-
Estrada-Ruiz E, Martínez-Cabrera HI. 2011. A new Late Cretaceous (Coniacian-Maastrichtian) Javelinoxylon wood from Chihuahua, Mexico. IAWA J. 32: 521–530. DOI: 10.1163/22941932-90000074.
-
Estrada-Ruiz E, Martínez-Cabrera HI, Cevallos-Ferriz SR. 2007. Fossil woods from the late Campanian–early Maastrichtian Olmos Formation, Coahuila, Mexico. Rev. Palaeobot. Palynol. 145: 123–133.
-
Estrada-Ruiz E, Martínez-Cabrera HI, Cevallos-Ferriz SR. 2010. Upper Cretaceous woods from the Olmos Formation (late Campanian–early Maastrichtian), Coahuila, Mexico. Am. J. Bot. 97: 1179–1194. DOI: 10.3732/ajb.0900234.
-
Felix J. 1882. Studien über fossile Hölzer. Inaugural-Dissertation zur Erlangung der Doctorwurde, Universität Leipzig, Leipzig.
-
Fitzgerald MG, Mitchum Jr RM, Uliana MA, Biddle KT. 1990. Evolution of the San Jorge basin, Argentina. AAPG Bull. 74: 879–920. DOI: 10.1306/0C9B23C1-1710-11D7-8645000102C1865D.
-
Futey MK, Gandolfo MA, Zamaloa MC, Cúneo R, Cladera G. 2012. Arecaceae fossil fruits from the Paleocene of Patagonia, Argentina. Bot. Rev. 78: 205–234. DOI: 10.1007/s12229-012-9100-9.
-
Gottwald H. 1969. Zwei Kieselhölzer aus dem Oligozän von Tunis, Bombacoxylon oweni und Pseudolachnostyloxylon weylandii. Palaeontographica 125B: 112–118.
-
Gregory M, Poole I, Wheeler EA. 2009. Fossil dicot wood names. An annotated list with full bibliography. IAWA J. Suppl. 6: 220.
-
Gupta KM. 1936. Leguminoxylon burmense gen. et sp. nov. a dicotyledonous wood from the Tertiary of Burma. In: Proc. 23rd Indian Sci. Congr.: 305.
-
IAWA Committee. 1989. List of microscopic features for hardwood identification. IAWA Bull. 10: 219–329.
-
InsideWood. 2004. Onwards. InsideWood. Available online at http://insidewood.lib.ncsu.edu/search.
-
Jud NA, Dunham JI. 2017. Fossil woods from the Cenozoic of Panama (Azuero Peninsula) reveal an ancient neotropical rainforest. IAWA J. 38: 366–411. DOI: 10.1163/22941932-20170176.
-
Khan SA, Ahmed B, Rajput MT, Tahir SS. 2016. Andiroxylon thanobolensis sp. nov. a new species of fossil wood of family Fabaceae from manchar formation exposed near Thanobola Khan, district Jamshoro, Sindh, Pakistan. Pak. J. Bot. 48: 249–253.
-
Kloster A, Gnaedinger S, Adami-Rodrigues K, Urban C. 2012. Novo registro de Zollernioxylon tinocoi Mussa (Fabaceae) no Vale do Juruá, Mioceno da Formação Solimões, Bacia do Acre, Brasil. Gaea 8: 26–32. DOI: 10.4013/gaea.2012.81.04.
-
Kloster A, Gnaedinger S, Adami-Rodrigues K, Urban C. 2015. New record of Fabaceae fossil woods from the Solimões Formation (Miocene), Acre Basin, Amazon, Brazil. Rev. Bras. Paleontol. 18: 391–402.
-
Kramer K. 1974a. Die Tertiären Hölzer südost-Asiens (unter Ausschluss der Dipterocarpaceae). 1. Teil. Palaeontographica 144B: 45–181.
-
Kramer K. 1974b. Die Tertiären Hölzer südost-Asiens (unter Ausschluss der Dipterocar-paceae). 2. Teil. Palaeontographica 145B: 1–150.
-
Kräusel R. 1922. Fossile Hölzer aus dem Tertiär von Süd-Sumatra. Verh. Geol. Mijnbouwkd. Genoot. Ned. Kolon. (Geol. ser.) 5: 231–287.
-
Lemoigne Y. 1978. Flores tertiaires de la haute vallée de l’Omo (Ethiopie). Palaeontographica 165B: 89–157.
-
Licht A, Boura A, De Franceschi D, Ducrocq S, Soe AN, Jaeger JJ. 2014. Fossil woods from the late middle Eocene Pondaung Formation, Myanmar. Rev. Palaeobot. Palynol. 202: 29–46. DOI: 10.1016/j.revpalbo.2013.12.002.
-
Licht A, Boura A, De Franceschi D, Utescher T, Sein C, Jaeger JJ. 2015. Late middle Eocene fossil wood of Myanmar: implications for the landscape and the climate of the Eocene Bengal bay. Rev. Palaeob. Palynol. 216: 44–54. DOI: 10.1016/j.revpalbo.2015.01.010.
-
Machado LG, Scheel-Ybert R, Bolzon RT, Carvalho MA, Carvalho IS. 2012. Lenhos fósseis do Neógeno da Bacia do Acre, Formação Solimões: contexto paleoambiental. Rev. Bras. Geoci. 42: 67–80.
-
Mehrotra RC, Bera SK, Basumatary SK, Srivastava G. 2011. Study of fossil wood from the middle–late Miocene sediments of Dhemaji and Lakhimpur districts of Assam, India and its palaeoecological and palaeophytogeographical implications. J. Earth Syst. Sci. 120: 681–701. DOI: 10.1007/s12040-011-0103-4.
-
Mehrotra RC, Mehrotra N, Srivastava G, Shah SK. 2017. Occurrence of fossil woods in the Unakoti District, Tripura and their palaeoclimatic significance. J. Palaeont. Soc. India 62: 17–30.
-
Metcalfe CR, Chalk L. 1950. Anatomy of the dicotyledons. Clarendon Press, Oxford.
-
Müller-Stoll WR, Mädel E. 1967. Die fossilen Leguminosen-Hölzer. Eine Revision der mit Leguminosen verglichenen fossilen Hölzer und Beschreibungen älterer und neuer Arten. Palaeontographica 119B: 95–174.
-
Müller-Stoll WR, Mädel-Angeliewa E. 1984. Fossile Hölzer mit schmalen apotrachealen Parenchymbändern, II. Arten aus den Gattungen Ebenoxylon Felix und Eudiospyroxylon gen. nov. Feddes Repert. 95: 155–167.
-
Mussa D. 1959. Contribuição à paleoanatomia vegetal II. Madeiras fósseis do Território do Acre (Alto Juruá), Brasil. Bol. Div. Geol. Mineral. DNPM, MA, Rio de Janeiro 195: 1–54.
-
Prakash U, Dayal R. 1963. Fossil wood resembling Grewia from the Deccan Intertrappean beds of Mahurzari near Nagpur, India. Curr. Sci. 32: 315–316.
-
Prakash U, Tripathi PP. 1975. Fossil woods of Ougenia and Madhuca from the Tertiary of Assam. Palaeobotanist 24: 140–145.
-
Privé-Gill C, Azanza B, Morales J, Gill GA, Lemoine M. 1993. Early Miocene silicified wood and associated fauna from the Cuenca Province, Spain — Genistoxylon dorycnioides n. sp. (Leguminosae — Papilionaceae). Rev. Palaeobot. Palynol. 78: 395–402. DOI: 10.1016/0034-6667(93)90073-4.
-
Ramanujam CGK. 1960. Silicified woods from the Tertiary rocks of south India. Palaeontographica 106B: 99–140.
-
Ramanujam CGK. 1996. Floristic diversity in the Neogene and modern forests of Pondicherry-Neyveli area of Tamil Nadu — its impact on climatic and phytogreographic aspects. Rheedea 6: 29–41.
-
Record SJ. 1943. Woods of storied structure. Trop. Woods 76: 32–47.
-
Rodríguez-Reyes O, Falcon-Lang H, Gasson P, Collinson M, Jaramillo C. 2014. Fossil woods (Malvaceae) from the lower Miocene (early to mid-Burdigalian) part of the Cucaracha formation of Panama (central America) and their biogeographic implications. Rev. Palaeobot. Palynol. 209: 11–34. DOI: 10.1016/j.revpalbo.2014.05.006.
-
Ruiz DP, Brea M, Raigemborn MS, Matheos SD. 2017. Conifer woods from the salamanca formation (early Paleocene), central Patagonia, Argentina: paleoenvironmental implications. J. Soc. Am. Earth Sci. 76: 427–445. DOI: 10.1016/j.jsames.2017.04.006.
-
Ruiz DP, Raigemborn MS, Brea M, Pujana RR. 2020. Paleocene Las Violetas fossil forest: wood anatomy and paleoclimatology. J. Soc. Am. Earth Sci. 98: 102414. DOI: 10.1016/j.jsames.2019.102414.
-
Sakala J, Rapprich V, Pecskay Z. 2010. Fossil angiosperm wood and its host deposits from the periphery of a dominantly effusive ancient volcano (Doupovské hory Volcanic Complex, Oligocene — Lower Miocene, Czech Republic): systematics, volcanology, geochronology and taphonomy. Bull. Geosci. 85: 617–629.
-
Schenk A. 1883. Fossile Hölzer. Palaeontographica 30: 1–17.
-
Schmid E. 1853. Die organischen Reste des Muschelkalkes im Saal-Thale bei Jena. Neues Jb. Mineral. Geol. Paläontol.: 9–30.
-
Shallom LJ. 1963. A fossil dicotyledonous wood with tile cells, from the Deccan Intertrappean beds of Mahurzari. J. Indian Bot. Soc. 42: 170–176.
-
Shukla A, Mehrotra RC, Guleria JS. 2013. A fossil wood of Gluta L. (Anacardiaceae) from the early Eocene sediments of Gujarat, western India. Palaeobotanist 62: 65–70.
-
Shukla A, Mehrotra RC, Mandal N, Thakkar MG. 2014. Two new fossil woods from the early Miocene of Kutch, Gujarat, India and their significance. Hist. Biol. 27: 970–977. DOI: 10.1080/08912963.2014.917088.
-
Singh H, Prasad M, Kumar K, Singh SK. 2015. Early Eocene macroflora and associated palynofossils from the Cambay Shale formation, western India: phytogeographic and palaeoclimatic implications. Palaeoworld 24: 293–323. DOI: 10.1016/j.palwor.2015.05.002.
-
Songtham W, Mildenhall DC, Ratanasthien B. 2012. Petrified tree trunks from a gravel deposit, Ban Tak Petrified Forest Park, Ban Tak-Sam Ngao Basin, Tak Province, Northern Thailand. J. Sci. Technol. MSU 31: 93–100.
-
Soomro NUA, Arain BA, Rajput T. 2014. Ougenioxylon chinjiensis sp. nov., a new fossil species of the family Leguminosae from Chinji Formation Salt Range, Punjab Pakistan. Am. J. Plant Sci. 5: 3745–3751. DOI: 10.4236/ajps.2014.526391.
-
Soomro NUA, Arain BA, Rajput T, Hassaney SS. 2017. A new petrified wood Millettioxylon sindhiensis sp nov. (Fabaceae) from Thanobola Khan, Sindh, Pakistan. Pak. J. Bot. 49: 369–374.
-
Srivastava G, Mehrotra RC, Tiwari PP. 2009. Fossil wood from the Tipam Group of North Hlimen, Mizoram. Palaeobotanist 58: 29–32.
-
Srivastava R, Guleria JS. 2000. Grewinium, a substitute name for Grewioxylon Shallom non Schuster. Palaeobotanist 49: 531–532.
-
Suzuki M, Terada K. 1996. Fossil wood flora from the Lower Miocene Yanagida Formation, Noto Peninsula, central Japan. IAWA J. 17: 365–392. DOI: 10.1163/22941932-90000634.
-
Tiwari RP, Mehrotra RC, Srivastava G, Shukla A. 2012. The vegetation and climate of a Neogene petrified wood forest of Mizoram, India. J. Soc. Am. Earth Sci. 61: 143–165. DOI: 10.1016/j.jseaes.2012.09.012.
-
Trivedi TK. 1976. Fossil dicotyledonous woods from the Deccan Intertrappean beds of Mahurzari. Botanique Nagpur 7: 111–118.
-
Trivedi BS, Panjwani M. 1986. Fossil wood of Bauhinia from the Siwalik Beds of Kalagarh, UP. Geophytology 16: 66–69.
-
Trivedi BS, Srivastava R. 1982. A fossil wood of Ebenaceae from the Deccan Intertrappean beds of Madhya Pradesh (India). J. Indian Bot. Soc. 61: 254–259.
-
Turland NJ, Wiersema JH, Barrie FR, Greuter W, Hawksworth DL, Herendeen PS, et al.2018. International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten. DOI: 10.12705/Code.
-
Vozenin-Serra C. 1981. Les structures ligneuses néogènes du Plateau de Di Linh (SudViêtnam). Palaeontographica B 177: 136–161.
-
Wang Y-D, Zhang W, Zheng SL, Jintasakul P, Grote PJ, Boonchai N. 2006. Recent advances in the study of Mesozoic — Cenozoic petrified wood from Thailand. Progr. Nat. Sci. 16: 501–506.
-
Wheeler EA, Baas P. 1991. A survey of the fossil record for dicotyledonous wood and its significance for evolutionary and ecological wood anatomy. IAWA J. 12: 275–318. DOI: 10.1163/22941932-90001256.
-
Wheeler EA, Baas P. 2019. Wood evolution: baileyan trends and functional traits in the fossil record. IAWA J. 40: 488–529. DOI: 10.1163/22941932-40190230.
-
Wheeler EA, Lehman TM. 2000. Late Cretaceous woody dicots from the Aguja and Javelina Formations, Big Bend National Park, Texas, USA. IAWA J. 21: 83–120.
-
Wheeler EA, Lehman TM, Gasson PE. 1994. Javelinoxylon, an upper Cretaceous dicotyledonous tree from Big Bend National Park, Texas, with presumed Malvalean affinities. Am. J. Bot. 81: 703–710.
-
Wheeler EA, Wiemann MC, Fleagle JG. 2007. Woods from the Miocene bakate formation, Ethiopia: anatomical characteristics, estimates of original specific gravity and ecological inferences. Rev. Palaeobot. Palynol. 146: 193–207. DOI: 10.1016/j.revpalbo.2007.04.002.
-
Wiemann MC, Wheeler EA, Manchester SR, Portier KM. 1998. Dicotyledonous wood anatomical characters as predictors of climate. Palaeogeogr. Palaeoclimatol. Palaeoecol. 139: 83–100. DOI: 10.1016/S0031-0182(97)00100-4.
-
Woodcock DW, Ingas CM. 1994. Prevalence of wood characters in eastern North America: what characters are most promising for interpreting climates from fossil wood? Am. J. Bot. 81: 1243–1251. DOI: 10.1002/j.1537-2197.1994.tb11445.x.
-
Woodcock DW, Meyer HW, Prado Y. 2017. The Piedra Chamana fossil woods (Eocene, Peru). IAWA J. 38: 313–365. DOI: 10.1163/22941932-20170175.
-
Woodcock DW, Meyer HW, Prado Y. 2019. The Piedra Chamana fossil woods (Eocene, Peru), II. IAWA J. 40: 551–595. DOI: 10.1163/22941932-40190231.
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Paleocene fossil wood from Patagonia with storied rays and comments on the fossil record of this character
In: IAWA JournalCátedra de Paleontología II, Facultad de Ciencias Naturales y Museo, UNLP, Calle 122 y 60 s/n, 1900 La Plata, Argentina
Search for other papers by Daniela P. Ruiz in
Current site
Google Scholar
PubMed
Search for other papers by Roberto R. Pujana in
Current site
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PubMed
Search for other papers by Mariana Brea in
Current site
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PubMed
Summary
The storied structure in wood anatomy is considered derived and highly specialized, and is present in some related families. The first records of this character are from the Cretaceous, but it is scarce in the Cretaceous and Paleocene, and apparently absent until the Eocene in the temperate Southern Hemisphere. Using standard methodology, we describe the anatomy of a fossil wood from the early Paleocene of Patagonia (Salamanca Formation). The fossil wood, assigned to a new genus and species Elizabethiaxylon patagonicum related to the Malvaceae, is characterized by its diffuse-porous wood, solitary vessels, simple perforation plates, apotracheal banded axial parenchyma, and mostly biseriate storied rays. The storied structure in this wood is one of the oldest records from Gondwana.
| All Time | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 348 | 197 | 20 |
| Full Text Views | 126 | 101 | 1 |
| PDF Views & Downloads | 219 | 159 | 2 |