{"product_id":"nanotyrannus-lancencis","title":"Nanotyrannus lancencis","description":"\u003cp data-start=\"42\" data-end=\"550\"\u003e\u003cstrong\u003e\u003cem data-start=\"42\" data-end=\"66\"\u003eNanotyrannus lancensis\u003c\/em\u003e\u003c\/strong\u003e is a controversial tyrannosaurid theropod taxon from the Late Cretaceous (Late Maastrichtian), known primarily from a relatively complete skull (CMNH 7541) found in the Hell Creek Formation of Montana, USA. Its validity as a separate genus has been widely debated, with numerous studies interpreting it as a juvenile \u003cem data-start=\"451\" data-end=\"470\"\u003eTyrannosaurus rex\u003c\/em\u003e , while others maintain that it possesses its own diagnostic features.\u003c\/p\u003e\n\u003cp data-start=\"552\" data-end=\"998\"\u003e The type specimen is a relatively large individual, though smaller than adult tyrannosaurs, with an estimated body length of 5–6 meters and a mass of approximately 600–1,000 kg, depending on the allometric model used. Its overall build was gracile compared to \u003cem data-start=\"870\" data-end=\"889\"\u003eTyrannosaurus rex\u003c\/em\u003e , with relatively long and slender hind limbs, suggesting greater cursorial capability.\u003c\/p\u003e\n\u003cp data-start=\"1000\" data-end=\"1629\"\u003e The skull is proportionally elongated and narrow, reaching approximately 60 cm in length. It has large, subcircular orbits, a typical feature of juvenile individuals in many archosaurs. The antorbital fenestra is well developed, and the rostral region is more laterally compressed than in adult specimens of robust tyrannosaurids. One of the arguments in favor of its taxonomic validity has been the high number of maxillary teeth (around 17 per side), higher than the usual number in adult \u003cem data-start=\"1503\" data-end=\"1511\"\u003eT. rex\u003c\/em\u003e , which typically has 11–12; however, it has been noted that the tooth count can vary ontogenetically.\u003c\/p\u003e\n\u003cp data-start=\"1631\" data-end=\"2046\"\u003e The dentition shows laterally compressed, recurved teeth with finely serrated keels, adapted for efficient tissue cutting. Unlike large adult tyrannosaurids, whose premaxillary teeth have a marked \"D\" cross-section, in the specimen attributed to \u003cem data-start=\"1912\" data-end=\"1926\"\u003eNanotyrannus\u003c\/em\u003e these proportions are less robust, reinforcing the hypothesis of a juvenile morphology or a more slender morphotype.\u003c\/p\u003e\n\u003cp data-start=\"2048\" data-end=\"2591\"\u003e The postcranial skeleton, based on referenced materials and controversial assignments, suggests a bipedal animal with a long, proximally rigid tail to balance the trunk during locomotion. The forelimbs, typically reduced in tyrannosaurids, retained the functional morphology of two main digits with robust claws. The hindlimbs show relatively long tibiae relative to the femur, a ratio associated with greater relative speed compared to the massive adults of \u003cem data-start=\"2575\" data-end=\"2590\"\u003eTyrannosaurus\u003c\/em\u003e .\u003c\/p\u003e\n\u003cp data-start=\"2593\" data-end=\"3039\"\u003e Histologically, some bone growth analyses have indicated that certain specimens attributed to \u003cem data-start=\"2698\" data-end=\"2712\"\u003eNanotyrannus\u003c\/em\u003e exhibit bone tissue still in an active growth phase, supporting the hypothesis that they are juvenile \u003cem data-start=\"2842\" data-end=\"2861\"\u003eTyrannosaurus rex\u003c\/em\u003e individuals. However, the discussion continues within the systematics field, as the distinction between ontogenetic variation and actual taxonomic differences in tyrannosaurids is complex.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eApproximate measurements of the Nanotyrannus:\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cspan\u003e1:35 Scale Complete\u003c\/span\u003e\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eLength 136 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eHeight 78 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eWidth 41 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eSnout-tail length 157 mm\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cspan\u003eComplete 1:20 Scale\u003c\/span\u003e\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eLength 238 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eHeight 136 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eWidth 72 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eSnout-tail length 275 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Dino and Dog","offers":[{"title":"1:35 \/ Unprimed","offer_id":54705679237388,"sku":"DC-1311-135-SINI","price":39.55,"currency_code":"EUR","in_stock":true},{"title":"1:35 \/ Primed","offer_id":54705679270156,"sku":"DC-1311-135-IMPRI","price":46.55,"currency_code":"EUR","in_stock":true},{"title":"1:35 \/ Hand-painted","offer_id":54705679302924,"sku":"DC-1311-135-PINTA","price":142.6,"currency_code":"EUR","in_stock":true},{"title":"1:20 \/ Unprimed","offer_id":54705679139084,"sku":"DC-1311-158-SINI","price":69.82,"currency_code":"EUR","in_stock":true},{"title":"1:20 \/ Primed","offer_id":54705679171852,"sku":"DC-1311-158-IMPRI","price":81.82,"currency_code":"EUR","in_stock":true},{"title":"1:20 \/ Hand-painted","offer_id":54705679204620,"sku":"DC-1311-158-PINTA","price":210.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/1106\/7660\/files\/Nanotyrannus_2.jpg?v=1772720840","url":"https:\/\/dinosauriacreatures.com\/en\/products\/nanotyrannus-lancencis","provider":"Dinosauria Creatures","version":"1.0","type":"link"}