Sinotyrannus Gigantic Trackers: Figure Guide & DNA Scan Code

Is Sinotyrannus Still a Valid Name?

The animal on this box has had a busy scientific life. Here is how its name and family have shifted since the fossil was found.

2004Huaxiagnathus is named from young, lightly built skeletons in the older Yixian Formation of Liaoning, China, and filed with the small compsognathids.

2009Sinotyrannus kazuoensis is described from one big adult skeleton in the Jiufotang Formation. Its describers suggest it could be the earliest tyrannosaurid.

2010sLater studies move it into Proceratosauridae, a family of early, often crested tyrannosaur relatives. A 2016 analysis finds the feathered Yutyrannus as its closest relative.

2025Andrea Cau and Alessandro Paterna argue that Sinotyrannus is simply the adult form of Huaxiagnathus. If that holds, the older name wins and Sinotyrannus becomes a junior synonym.

The 2025 idea is still new and other researchers have yet to test it, so Sinotyrannus remains the name you will see in most books, and of course on this box. If it sticks, this figure becomes a rare toy of a name that no longer exists.

What Is Gigantic Trackers?

Gigantic Trackers was the largest regular assortment in Mattel’s Dino Trackers line. Each figure is roughly 35 cm long, has two attack motions and comes with removable tracking gear, a nod to the tracking devices seen in Jurassic World Dominion. Wave 1 paired Sinotyrannus with a Stegosaurus, and wave 2 added Elasmosaurus and Bistahieversor.

The Gigantic Trackers name carried on in Epic Evolution and Chaos Theory, and Primal Ambush keeps the big figure slot alive with its Gigantic Thrashers.

Paint and Colours

Dark olive green
Most of the body, legs and tail

Lime green
Back, shoulders, arms and neck

Crimson red
Head crest, jaw stripe and tail tip

Yellow
Lower jaw and throat

Charcoal
Spikes along the back and tail

Red pink
Inside of the mouth

The base colour is a deep olive green, with a brighter lime wash over the back, shoulders and arms that gives the figure a two-tone look from above. All the bold accents sit at the ends: a crimson crest and jaw stripe up front, a yellow lower jaw and throat, and red under the tip of the tail. A row of dark spikes runs along the spine and tail and ties the scheme together. It reads as a jungle hunter, which suits the habitat theme of the Dino Trackers packaging.

Sculpt and Detail

Head and crest

The head is long and fairly narrow, with a raised red crest above the eyes and a lower ridge running along the snout. When the jaw drops it shows two neat rows of white teeth and a red mouth, and the yellow throat makes the open bite pop.

Skin, spikes and hands

The body is covered in fine scale texture, with heavier rounded scales on the thighs and lower legs. A row of dark spines runs from the neck all the way to the tail tip. The arms are small but well formed, each ending in three clawed fingers, which fits an early tyrannosaur relative.

Tracker harness

Did Sinotyrannus really have a crest? Possibly. Close relatives in Proceratosauridae, such as Guanlong and Proceratosaurus, had crests on the snout, but too little of the Sinotyrannus skull survives to show one. The figure's crest is a fair guess rather than a known fact. Early tyrannosaur relatives like Yutyrannus also had simple feathers, which this scaly figure leaves out. The removable tracker harness is the other detail worth knowing: it is a dark grey strap with cables and a small device that fits around the neck and shoulders, as if a field team had tagged the animal.

Action Features and Articulation

✓ Opening jaw✓ Posable arms✓ Legs forward and back★ Press the back: lunging bite★ Press the hips: tail swipe✓ Removable tracker harness✗ No sound or lights

Gigantic Trackers figures work by pressure, not buttons. Press down on the upper back and the head lunges forward and down as the jaw swings open, a quick biting strike. Press near the hips and the tail flicks up and out to the side for a sweeping tail attack. There are no batteries, lights or sounds, so it is ready to play straight out of the box and easy for small hands to work.

Size and Specs

MeasurementInchesCentimetres

Length, snout to tailAbout 13.75 inAbout 35 cm

Height to the head crestAbout 6 inJust over 15 cm

Product code HLP25, sold in the HLP23 Gigantic Trackers case. It was released in October 2022 for ages 4 and up, and it is about the same length as the later Gigantic Thrashers figures in Primal Ambush, so the two lines sit well together on a shelf.

Is It Worth Buying?

Sinotyrannus is a good pick for kids who like big meat-eaters that actually do something. The two strike moves are simple to trigger, the size is impressive next to standard figures, and the red, green and yellow colours stand out on a shelf. For collectors it is one of the very few toys of this animal ever made.

It came out in 2022, so today it is mostly found second hand. If you buy one used, check that the tracker harness is included, because it is the piece most often missing.

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Good to know

About Sinotyrannus

Sinotyrannus kazuoensis was described in 2009 by Ji and colleagues from a single partial skeleton found in Kazuo County, western Liaoning, China. The bones come from the Jiufotang Formation, part of the famous Jehol Biota, and date to the Early Cretaceous, roughly 120 million years ago. Only the front of the skull, a few back vertebrae, parts of the hips and some finger bones survive.

Even from those pieces it was clearly big. The describers estimated 9 to 10 m, which would make it the largest predator of its ecosystem, while other estimates come in closer to 6 m. Either way it is very large for an early tyrannosaur relative, living tens of millions of years before Tyrannosaurus.

Today it is usually placed in Proceratosauridae, alongside Guanlong and Proceratosaurus, and a 2025 study suggests it may be the adult of Huaxiagnathus, as the timeline above explains.

How to Unlock Sinotyrannus in the Jurassic World Play App

Open the Jurassic World Play App (it used to be called the Jurassic World Facts App), tap Scan and point your camera at the DNA code below. The same code is printed on the figure, so you can also scan the toy itself.

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Frequently Asked Questions

How big is the Gigantic Trackers Sinotyrannus?

It is about 13.75 inches (35 cm) long from snout to tail and about 6 inches (just over 15 cm) tall at the head crest.

What does the Sinotyrannus action feature do?

Press the upper back and the head lunges down as the jaw opens for a biting strike. Press near the hips and the tail swipes up and to the side. It needs no batteries.

When was the Gigantic Trackers Sinotyrannus released?

It came out in October 2022 in wave 1 of Gigantic Trackers, part of Jurassic World Dino Trackers, alongside a Stegosaurus. Its product code is HLP25.

How big was the real Sinotyrannus?

Only a partial skeleton is known, so estimates vary. The scientists who named it suggested 9 to 10 m long, while other estimates are closer to 6 m. Either way it was the biggest predator in its ecosystem.

Is Sinotyrannus the same animal as Huaxiagnathus?

Maybe. A 2025 study by Cau and Paterna argues that Sinotyrannus is the adult form of Huaxiagnathus, which was named first. If other researchers agree, Sinotyrannus would become a junior synonym.

How do I scan the Sinotyrannus DNA code?

Open the Jurassic World Play App, tap Scan and point your camera at the DNA code printed on the figure, or at the copy on this page.

Sinotyrannus Gigantic Trackers