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Recently, MB also was described in a single specimen of the saurischian dinosaur\n                    <jats:italic>Tyrannosaurus rex<\/jats:italic>\n                    . Here, we report two other occurrences of MB: in another saurischian dinosaur,\n                    <jats:italic>Allosaurus<\/jats:italic>\n                    , and in the ornithischian dinosaur\n                    <jats:italic>Tenontosaurus<\/jats:italic>\n                    . We show by counting lines of arrested growth and performing growth curve reconstructions that\n                    <jats:italic>Tenontosaurus<\/jats:italic>\n                    ,\n                    <jats:italic>Allosaurus<\/jats:italic>\n                    , and\n                    <jats:italic>Tyrannosaurus<\/jats:italic>\n                    were reproductively mature by 8, 10, and 18 years, respectively. RM in these dinosaurs coincided with a transition from growth acceleration to deceleration. It also far precedes predictions based on the growth rates of living reptiles scaled to similar size. Despite relatively rapid growth, dinosaurs were similar to reptiles in that RM developed before reaching asymptotic size. However, this reproductive strategy also occurs in medium- to large-sized mammals and correlates with a strategy of prolonged multiyear growth. RM in actively growing individuals suggests that these dinosaurs were born relatively precocial and experienced high adult mortality. The origin of the modern avian reproductive strategy in ornithuran birds likely coincided with their extreme elevations in growth rate and truncations to growth duration.\n                  <\/jats:p>","DOI":"10.1073\/pnas.0708903105","type":"journal-article","created":{"date-parts":[[2008,1,15]],"date-time":"2008-01-15T00:12:02Z","timestamp":1200355922000},"page":"582-587","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":204,"title":["Sexual maturity in growing dinosaurs does not fit reptilian growth models"],"prefix":"10.1073","volume":"105","author":[{"given":"Andrew H.","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Integrative Biology and Museum of Paleontology, University of California, Berkeley, CA 94720-3140"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Werning","sequence":"additional","affiliation":[{"name":"Department of Integrative Biology and Museum of Paleontology, University of California, Berkeley, CA 94720-3140"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[2008,1,15]]},"reference":[{"key":"e_1_3_4_1_2","doi-asserted-by":"publisher","DOI":"10.1017\/S0094837300006023"},{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.2307\/j.ctt1zxz1md.18"},{"key":"e_1_3_4_3_2","first-page":"319","volume":"18","author":"Chinsamy A","year":"1993","unstructured":"A Chinsamy Mod Geol 18, 319\u2013329 (1993).","journal-title":"Mod Geol"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.1666\/0094-8373(2000)026<0466:LHOTTS>2.0.CO;2"},{"key":"e_1_3_4_5_2","doi-asserted-by":"publisher","DOI":"10.1038\/35086558"},{"key":"e_1_3_4_6_2","doi-asserted-by":"publisher","DOI":"10.1038\/35086500"},{"key":"e_1_3_4_7_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2004.2829"},{"key":"e_1_3_4_8_2","doi-asserted-by":"publisher","DOI":"10.1671\/0272-4634(2004)024[0555:GISDAP]2.0.CO;2"},{"key":"e_1_3_4_9_2","first-page":"893","volume":"40","author":"Stearns SC","year":"1986","unstructured":"SC Stearns, JC Koella Evolution (Lawrence, Kans) 40, 893\u2013913 (1986).","journal-title":"Evolution (Lawrence, Kans)"},{"key":"e_1_3_4_10_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1420-9101.1993.6040547.x"},{"key":"e_1_3_4_11_2","first-page":"245","volume-title":"Bone: Bone Growth","author":"Castanet J","year":"1993","unstructured":"J Castanet, H Francillon-Vieillot, FJ Meunier, A de Ricql\u00e8s Bone: Bone Growth, ed BK Hall (CRC, Boca Raton, FL), pp. 245\u2013283 (1993)."},{"key":"e_1_3_4_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.10406"},{"key":"e_1_3_4_13_2","doi-asserted-by":"publisher","DOI":"10.2307\/1380844"},{"key":"e_1_3_4_14_2","volume-title":"Bioenergetics and Growth: With Special Reference to the Efficiency Complex in Domestic Animals","author":"Brody S","year":"1964","unstructured":"S Brody Bioenergetics and Growth: With Special Reference to the Efficiency Complex in Domestic Animals (Hafner, 2nd Ed, New York, 1964).","edition":"2"},{"key":"e_1_3_4_15_2","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9780511608483"},{"key":"e_1_3_4_16_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.1112158"},{"key":"e_1_3_4_17_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1997.0034"},{"key":"e_1_3_4_18_2","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.184.1.63"},{"key":"e_1_3_4_19_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.243.4899.1711"},{"key":"e_1_3_4_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.bone.2006.10.029"},{"key":"e_1_3_4_21_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.260.5109.794"},{"key":"e_1_3_4_22_2","unstructured":"S Werning (University of Oklahoma Norman Thesis. 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