PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchiTechGuides is reader-supported.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
A fossil foot bone bearing 16 tooth marks offers evidence that a smaller tyrannosaurid fed on a much larger one—but not that it killed it. The researchers interpret the marks as most consistent with scavenging. The animal may have eaten a member of its own species, but the fossil does not establish that identity, and “baby” overstates what is known about its age.
What the fossil shows
The evidence is a partial left second metatarsal, a foot bone catalogued as BDM 124, from Montana’s Judith River Formation. Josephine Nielsen, Denver Fowler, Taia Wyenberg-Henzler, Aase Roland Jacobsen and Christof Pearce documented 16 distinct tooth marks on it in a 2026 paper in Evolving Earth. They used a tooth-mark classification system, high-resolution 3D surface scans and morphometric analyses to study the traces. The paper interprets the marks’ size and spacing as evidence that a small tyrannosaurid fed on a significantly larger one.
This is evidence preserved on a bone, not a snapshot of an attack. The fossil records contact between teeth and bone; researchers infer the feeding behavior from the marks’ pattern and condition.
Was it a baby T. rex?
“Baby” is not a precise age designation established for BDM 124. The research supports calling the feeder a smaller or juvenile tyrannosaurid, but the exact age is not established in the cited material. A 2026 Journal of Paleontology discussion of the study reports estimated lengths of about 5.8 metres for the smaller animal and 10–12 metres for the larger adult. Those are estimates, not direct measurements, and they make clear that “baby” should not be taken to mean a tiny hatchling. The discussion also considers uncertainty in assigning bite marks to a particular animal.
#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.
Did it hunt or scavenge?
The study favors scavenging: the marks’ placement and morphology, together with the lack of healing, are consistent with feeding after the larger animal had died. That interpretation is different from evidence of a kill. BDM 124 does not show when or how the larger animal died, nor does it identify who killed it. The authors’ reading is that the smaller tyrannosaurid ate from a carcass, not that it brought down the larger animal.
Does this prove cannibalism?
Not conclusively. Cannibalism means an animal consumed a member of its own species. The researchers’ interpretation allows that the feeder and the larger animal were conspecifics, but it also allows that they were closely related tyrannosaurids of different taxa. The feeding inference is stronger than the exact species identification, so the careful description is possible cannibalistic scavenging—or scavenging on a larger tyrannosaurid relative.
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.
The attribution problem is not unique to this fossil. The 2026 Journal of Paleontology discussion describes tooth marks on an Albertosaurus specimen, TMP 2022.007.0040, whose maker cannot be identified with certainty. If the marks were made by Albertosaurus, that would be cannibalism; other possible makers remain under consideration. A pattern can support feeding while leaving the biter’s identity unresolved.
Free tools Windows power users keep installed
One-click scans. No signup required.
How can scientists tell a bite from another mark?
Researchers examine the marks’ form, dimensions and spacing, then compare those features with known tooth patterns. In the BDM 124 study, 3D scanning and morphometric analysis helped characterize the traces and assess whether they fit a small tyrannosaurid. Placement and the absence of healing also informed the interpretation that the marks were made during feeding after death rather than during a survived injury. These methods support an interpretation; they do not turn a bite-marked bone into a record of the entire event.
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.
How this fits earlier tyrannosaur feeding evidence
Other studies provide context but concern different fossils, not BDM 124. A 2010 PLOS ONE study described tooth marks on four Tyrannosaurus specimens and attributed them to other Tyrannosaurus, interpreting the traces as likely opportunistic scavenging. It considered whether smaller marks could have come from juveniles or subadults, while also discussing the possibility that they came from smaller teeth farther back in the jaws of a large animal. The study is earlier evidence of feeding traces, not proof about the animal that marked BDM 124.
A 2019 study compared marks on a vertebra with tooth dimensions and spacing across Tyrannosaurus growth stages, attributing those traces to a juvenile T. rex. It used the specimen known as Jane, whose age had been estimated histologically at about 11–12 years, as a comparison. That figure belongs to Jane, not to the BDM 124 animal. The 2019 study adds context for juvenile feeding traces without resolving BDM 124’s age or species.
Quick Recap
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.
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
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.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →
