{"id":367,"date":"2025-08-28T06:35:12","date_gmt":"2025-08-28T13:35:12","guid":{"rendered":"https:\/\/scienceblog.com\/wildscience\/?p=367"},"modified":"2025-08-28T06:35:12","modified_gmt":"2025-08-28T13:35:12","slug":"spicomellus-was-a-walking-fortress-of-spikes-and-armor","status":"publish","type":"post","link":"https:\/\/scienceblog.com\/wildscience\/2025\/08\/28\/spicomellus-was-a-walking-fortress-of-spikes-and-armor\/","title":{"rendered":"Spicomellus Was a Walking Fortress of Spikes and Armor"},"content":{"rendered":"<p>The world\u2019s strangest dinosaur just got stranger. Newly unearthed fossils of <i>Spicomellus afer<\/i> from Morocco reveal a creature clad in bone spikes from head to tail, some measuring nearly a meter long. The discovery, led by researchers from the Natural History Museum in London, the University of Birmingham, and Moroccan collaborators, shows that ankylosaurs had developed elaborate defenses far earlier than previously thought.<\/p>\n<h2>A Dinosaur Unlike Any Other<\/h2>\n<p>Back in 2019, paleontologist Susannah Maidment acquired a single rib with spikes fused directly to its surface\u2014an anatomy so bizarre that some doubted whether it belonged to an ankylosaur at all. But after the species was formally described in 2021, expeditions near Boulemane, Morocco, yielded a jackpot: much more of the skeleton. What the team found was astonishing. This animal was bristling with spikes everywhere\u2014hips, sides, tail, and especially its neck, where a collar of spikes jutted outward like lances.<\/p>\n<blockquote><p>\u201cSpicomellus is one of the strangest dinosaurs that we\u2019ve ever discovered. It\u2019s utterly unlike any other found anywhere else in the world.\u201d \u2014 Prof. Richard Butler, University of Birmingham<\/p><\/blockquote>\n<p>The largest spikes stretched 87 centimeters, and when clothed in keratin sheaths, they would have been even longer. Imagine a slow-moving tank, but bristling with outward-facing spears. That was Spicomellus.<\/p>\n<h2>The Oldest Armored Dinosaur<\/h2>\n<p>The fossils date to 165 million years ago, making Spicomellus the earliest known ankylosaur. Until now, scientists thought such elaborate armor only appeared much later. Its bones also hint at a tail weapon\u2014vertebrae fused into a stiff \u201chandle\u201d structure that usually supports a club, previously thought to be exclusive to later Cretaceous ankylosaurs. That means ankylosaurs were experimenting with some of their signature defenses right from the beginning.<\/p>\n<p>This changes the timeline. \u201cTo find such elaborate armour in an early ankylosaur changes our understanding of how these dinosaurs evolved,\u201d says Maidment. \u201cIt shows just how significant Africa\u2019s dinosaurs are, and how important it is to improve our understanding of them.\u201d<\/p>\n<h2>Spikes That Broke the Rules<\/h2>\n<p>Normally, spikes and plates in reptiles grow in the skin as osteoderms. But not in Spicomellus. Many of its spikes were fused directly to the bones themselves, including the ribs. That fusion is unprecedented in the animal kingdom. Muscles normally attach to rib surfaces, but the spikes obstructed those surfaces, leaving scientists unsure how the dinosaur even moved.<\/p>\n<blockquote><p>\u201cFrankly, we have very little idea about how this dinosaur would have moved at all.\u201d \u2014 Prof. Susannah Maidment, Natural History Museum<\/p><\/blockquote>\n<p>The design seems impractical, almost self-defeating. Yet Spicomellus survived, meaning the armor worked\u2014likely a deterrent against Jurassic predators. Its fortress of bone and keratin may have made attack too costly, even if the animal moved awkwardly.<\/p>\n<h2>A Global Story With African Roots<\/h2>\n<p>Spicomellus is the first named ankylosaur from Africa, filling a glaring gap in the fossil record. Its presence suggests ankylosaurs had already spread across the globe by the Middle Jurassic. The find also underscores how little we know about Gondwanan dinosaurs. If one armored dinosaur in Morocco looked like this, what else lies buried under North African rock?<\/p>\n<p>The team published their findings in <i>Nature Ecology &amp; Evolution<\/i>, calling Spicomellus \u201cabsolutely bizarre\u201d but also deeply informative. The spiky skeleton proves that ankylosaurs began their evolutionary arms race far earlier than scientists had guessed.<\/p>\n<p>Takeaway? Dinosaurs didn\u2019t just evolve armor. Sometimes, they went all in, turning their bodies into walking fortresses bristling with weapons. Spicomellus was proof\u2014spectacular, strange proof\u2014that evolution sometimes errs on the side of overkill.<\/p>\n<p><b>Journal:<\/b> Nature Ecology &amp; Evolution<br \/>\n<b>DOI:<\/b> <a href=\"https:\/\/doi.org\/10.1038\/s41559-021-01553-6\">10.1038\/s41559-021-01553-6<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The world\u2019s strangest dinosaur just got stranger. Newly unearthed fossils of Spicomellus afer from Morocco reveal a creature clad in bone spikes from head to tail, some measuring nearly a meter long. The discovery, led by researchers from the Natural History Museum in London, the University of Birmingham, and Moroccan collaborators, shows that ankylosaurs had &#8230; <a title=\"Spicomellus Was a Walking Fortress of Spikes and Armor\" class=\"read-more\" href=\"https:\/\/scienceblog.com\/wildscience\/2025\/08\/28\/spicomellus-was-a-walking-fortress-of-spikes-and-armor\/\" aria-label=\"Read more about Spicomellus Was a Walking Fortress of Spikes and Armor\">Read more<\/a><\/p>\n","protected":false},"author":1298,"featured_media":368,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-367","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-natural-history"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Spicomellus Was a Walking Fortress of Spikes and Armor - Wild Science<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scienceblog.com\/wildscience\/2025\/08\/28\/spicomellus-was-a-walking-fortress-of-spikes-and-armor\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spicomellus Was a Walking Fortress of Spikes and Armor\" \/>\n<meta property=\"og:description\" content=\"The world\u2019s strangest dinosaur just got stranger. Newly unearthed fossils of Spicomellus afer from Morocco reveal a creature clad in bone spikes from head to tail, some measuring nearly a meter long. The discovery, led by researchers from the Natural History Museum in London, the University of Birmingham, and Moroccan collaborators, shows that ankylosaurs had ... 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