iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Short answer: Tyrannosaurus rex was generally the largest of the close comparisons, with a skull built around an exceptionally large jaw-muscle chamber. Tarbosaurus bataar approached its size and had a notably rigid skull, while Daspletosaurus and Gorgosaurus were smaller. Adult T. rex bite-force estimates fall between 35,000 and 60,000 newtons, but those figures come from biomechanical models rather than measurements from a living animal.
The comparison is not simply a contest of body length. Skull proportions, muscle attachment area, tooth and jaw design, geological setting and the uncertainty of tyrannosaur family trees all change what “closest relative” means. The evidence supports a powerful, bone-splintering T. rex bite, while leaving some details of its exact evolutionary relationship to Tarbosaurus unresolved.
How the main tyrannosaurs compare at a glance
Museum summaries and comparative biomechanics agree on the broad size ranking, although they caution that T. rex size varies substantially among specimens. The largest publicized individual should not be treated as a typical adult. Exact, directly comparable length and mass figures are not established for every taxon in the evidence considered here, so the table uses the strongest supported descriptions rather than invented point estimates.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →| Taxon | Adult size evidence | Skull and jaw profile | Geography or evolutionary context |
|---|---|---|---|
| Tyrannosaurus rex | Generally the largest in this comparison; individual size varies. | Very robust skull with the largest measured adductor chamber in the comparative sample. | North American Tyrannosaurus; the Australian Museum notes similarities to Asian Tarbosaurus and Zhuchengtyrannus. |
| Tarbosaurus bataar | Nearly as large as T. rex. | Robust, rigid skull; smallest arms relative to body size among large tyrannosaurs. | Central Asia; some researchers place it and T. rex in the same genus. |
| Daspletosaurus torosus | Smaller than T. rex, but still a large tyrannosaur. | Large, long skull and a long muscular tail; generally built like a smaller T. rex. | Alberta; coexisted with Gorgosaurus. |
| Gorgosaurus | Smaller than T. rex in the comparative group. | Its measured jaw-muscle chamber was far smaller than those of T. rex and Daspletosaurus. | Included in the comparative biomechanics sample; detailed size and relationship values are not stated here. |
| Tyrannosaurus mcraeensis | Described as a giant southern North American tyrannosaur; a standardized cross-taxon adult size comparison is not stated. | Relevant mainly because it belongs to an older branch near T. rex, not because a complete mechanical profile is available. | Southern North America; the 2023 study recovered it as a close older relative or side branch of T. rex. |
Why size rankings need caution
T. rex set the upper end of the comparison
The Natural History Museum places Tyrannosaurus in Tyrannosauridae and emphasizes variation between specimens. That matters because a maximum estimate answers “how large could an exceptional individual become?” rather than “what size was a normal adult?” Within the taxa discussed here, museum sources still identify T. rex as the largest overall.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Tarbosaurus was close, not a small imitation
The Australian Museum describes Tarbosaurus bataar as nearly as large as T. rex. Its reduced arms therefore cannot be interpreted as evidence of a generally small or lightly built animal. The forelimbs were short relative to its huge body, while the skull remained a massive, rigid feeding structure.
Daspletosaurus and Gorgosaurus occupied a lower size tier
Daspletosaurus torosus was built on the same broad tyrannosaur plan but was smaller than T. rex. Its large skull and long muscular tail show that “smaller” does not mean lightly constructed. Gorgosaurus is also below T. rex in the comparative sample, with the clearest quantitative difference appearing in jaw-muscle area rather than in a single universally accepted body-mass number.
Tyrannosaurus mcraeensis adds an older southern branch
The 2023 description of T. mcraeensis concerns an enormous tyrannosaur from southern North America. Its importance is evolutionary: it may represent an older close relative or side branch of the T. rex lineage. The available evidence does not justify assigning it a precise place in a simple largest-to-smallest ranking.
What made the T. rex skull different?
A larger chamber for the closing muscles
The most useful apples-to-apples measurement in the available biomechanics work is the area of the adductor chamber, the skull space associated with the muscles that close the jaws. In the study’s comparative sample, adult T. rex had by far the largest measured area.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
| Taxon | Measured adductor-chamber area | What the measurement indicates |
|---|---|---|
| Tyrannosaurus | 992 cm² | Largest jaw-muscle attachment capacity in the sample. |
| Daspletosaurus | 433 cm² | Substantial muscle area, but less than half the T. rex value. |
| Tarbosaurus | 329 cm² | Smaller measured chamber than Daspletosaurus and T. rex. |
| Gorgosaurus | 302 cm² | Smallest of these four tyrannosaurs in the study. |
| Yutyrannus | 67 cm² | Included as a broader comparative reference, not as one of T. rex’s closest relatives. |
When researchers scaled a Daspletosaurus cranium to the same length as the T. rex cranium, the T. rex configuration still indicated roughly 30 percent greater muscle-force potential. That result separates skull size from skull design: simply making a smaller tyrannosaur’s head longer would not reproduce the same internal muscle capacity.
Robust construction and tooth loading
The biomechanical interpretation combines the expanded adductor chamber with a robust skull and robust teeth. Together, those features point to a skull that could tolerate very high loads during a deep bite. The evidence does not mean every part of the skull was uniquely thick or that the animal used one identical bite in every situation; it means the overall architecture favored high force and resistance to bending and breakage.
How Tarbosaurus differed in shape
Tarbosaurus is described as having a particularly rigid, robust skull. Its extreme arm reduction is a forelimb specialization, not a sign that its jaws were weak. Similarities to T. rex are strong enough that some researchers have proposed placing both animals in the same genus, although that taxonomic choice depends on how the fossils are analyzed.
How Daspletosaurus differed in shape
Daspletosaurus had a large, long skull and a long muscular tail. Its proportions resemble the later T. rex body plan, but the smaller adductor-chamber measurement shows that resemblance does not equal identical jaw-muscle capacity.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Which tyrannosaur had the strongest bite?
The best-supported answer is adult T. rex
Published estimates for an adult T. rex bite span approximately 35,000–60,000 N. The range reflects modeling choices about muscle size, leverage, jaw motion and how forces were transmitted through the skull. It is commonly characterized as a bone-splintering bite.
Why the number is an estimate, not a measurement
No researcher can place a force sensor in the jaws of a living T. rex. The animal is extinct, so the values are reconstructed from fossil geometry and biomechanical assumptions. A newtons figure should therefore be read as a modeled force range, not as a directly observed maximum that every adult produced.
What the skull data add to the bite estimate
The adductor-chamber comparison provides an independent anatomical reason to expect exceptional force. The chamber area is about jaw-muscle capacity; bite force also depends on muscle architecture, attachment position, jaw leverage, tooth placement and the point along the tooth row where the bite is applied. The chamber result supports a powerful bite but does not convert directly into one exact force value.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Why a smaller relative could still be dangerous
A lower estimated or inferred force would not make Daspletosaurus, Tarbosaurus or Gorgosaurus ineffective predators. Their skulls and teeth were still specialized for seizing and processing prey. The comparison is about relative mechanical potential, not a threshold between “powerful” and “weak.”
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Profiles of the closest practical comparisons
Tyrannosaurus rex
T. rex combines the largest overall body size in this group with the largest measured adductor chamber. Its skull-and-tooth system is the clearest anatomical basis for the high modeled bite-force range. Size, however, must always be tied to the specimen: museum sources explicitly warn that individuals differ.
Tarbosaurus bataar
This Central Asian tyrannosaur was nearly as large as T. rex. Its robust, rigid skull and very small arms relative to body size make it one of the closest practical comparisons. The resemblance has fueled debate over whether Tarbosaurus should remain a separate genus or be grouped with Tyrannosaurus.
Daspletosaurus torosus
This Alberta tyrannosaur was smaller than T. rex but retained a large skull and a powerful, muscular tail. It coexisted with Gorgosaurus, demonstrating that more than one large tyrannosaur could occupy the same regional ecosystem. Its 433 cm² adductor chamber places it between T. rex and the smaller-chambered taxa in the study.
Gorgosaurus
Gorgosaurus contributes an important contrast in the biomechanics sample. Its 302 cm² adductor chamber is substantially below the values for T. rex, Daspletosaurus and Tarbosaurus. The available comparison does not provide a single standardized adult length or mass figure that should be substituted for that mechanical measurement.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Tyrannosaurus mcraeensis
Described in 2023 from southern North America, T. mcraeensis is significant because it may preserve an older stage of the Tyrannosaurus lineage. It broadens the geographic and evolutionary story beyond the classic northern T. rex record, but the evidence here does not provide the same detailed bite and skull dataset available for the comparative sample.
How certain is the family tree?
Similarity does not automatically prove sisterhood
Visual resemblance between T. rex and Tarbosaurus is real, and museum summaries emphasize it. Yet a 2003 analysis based on 77 skull characters did not recover Tarbosaurus as the direct sister taxon of T. rex. Different character choices, specimens and analytical methods can produce different trees.
The newer T. mcraeensis result changes the question
The 2023 study places T. mcraeensis as a close older relative or side branch of T. rex. That finding is relevant to where the Tyrannosaurus lineage may have evolved, but it does not erase earlier disagreements or establish one final, universally accepted tree.
Recommended Free Tools
What “closest relative” should mean here
For practical comparison, Tarbosaurus, Daspletosaurus, Gorgosaurus and T. mcraeensis are useful reference taxa. They should not all be presented as equally certain sister species. A careful statement is that they are close tyrannosaur comparisons, while the precise branching order remains evidence-dependent.
Bottom line: the meaningful differences
T. rex stands out through the combination of exceptional body size, a robust skull and an adductor chamber measured at 992 cm²—more than twice the Daspletosaurus value and more than three times the Gorgosaurus value. That anatomy is consistent with the published 35,000–60,000 N adult bite-force estimates, which are modeled rather than directly measured.
Tarbosaurus was the closest size rival and shared a powerful, rigid skull, but its exact taxonomic relationship to T. rex is unsettled. Daspletosaurus was a smaller, long-skulled relative with substantial jaw-muscle capacity, while Gorgosaurus provides a lower value in the same mechanical comparison. T. mcraeensis adds an older southern branch that may help explain the lineage’s history. The strongest conclusion is therefore anatomical, not taxonomic: among these comparisons, adult T. rex had the greatest demonstrated capacity for a high-force bite.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
