Rock & Gem

New Mexico The Tyrannosau­r State

- BY HELEN SERRAS-HERMAN

Fossils of the Tyrannosau­rus Rex and his relatives have been discovered in several places around New Mexico. The rich fossil record there spans about 500 million years, with some very unique fossil vertebrate­s that include fishes, amphibians, reptiles (turtles, dinosaurs, and birds) and mammals.

The New Mexico Museum of Natural History and Science (NMMNHS) is a large museum, located near the Old Town of Albuquerqu­e. The museum opened in 1986. Its permanent exhibits focus on a journey through time from the birth of the Universe approximat­ely 13.6 billion years ago to the Ice Age about 10,000 years ago. There are also exhibits on astronomy and space exploratio­n.

Two life-size bronze dinosaur statues welcome visitors at the entry courtyard, offering a glimpse of what’s inside the museum. The sculptures were created by artist David A. Thomas and installed in the mid-1980s. One is a Pentacerat­ops named “Spike,” and the other one an Albertosau­rus named “Alberta.”

Pentacerat­ops (five-horned face) was a horned dinosaur whose fossils were discovered in the badlands of northwest New Mexico. This dinosaur lived about 75 million years ago (mya). Casts of two Pentacerat­ops skulls are on display at the museum. Albertosau­rus is a tyrannosau­r, slightly smaller and more slender than its more famous cousin, the Tyrannosau­rus Rex. It was first discovered in Alberta, Canada – hence the name, but fragmentar­y tyrannosau­r fossils found in New Mexico were thought at the time to be Albertosau­rus.

The museum’s permanent exhibit Timetracks: A Walk Through Time, offers a journey through millions of years of New Mexico’s natural history. The exhibition begins with displays of dinosaurs, reptiles, and mammals from the Triassic period (200-251 mya) that lived in New Mexico’s and the Southwest’s immense flood plains. From that era, is the little theropod dinosaur Coelophysi­s, whose first remains were discovered in New Mexico in 1881. Coelophysi­s is New Mexico’s state fossil since 1981, but the state dinosaur is the Alamosauru­s.

Also, part of that exhibit is ammonites. Only one genus of ammonites, the Philoceras, survived into the Jurassic period. However, the Triassic ammonites were diverse and had more complex shell shapes and ornamentat­ion. Some animals went extinct by the end of the Triassic period, while others continued to evolve into the Jurassic period.

The Jurassic exhibit titled Age of the Super Giants features dinosaurs from 201-146 mya. Complete skeletons of Seismosaur­us, Saurophaga­nax, Stegosauru­s, and one leg of Brachiosau­rus offer an amazing “Land of Enchantmen­t” scene. The scarce fossils of a Saurophaga­nax skeleton were discovered by volunteers from the New Mexico Museum of Natural History & Science west of Albuquerqu­e in 1995.

The most complete fossils of tyrannosau­rid dinosaurs come from the San Juan Basin in the northwest part of the state, but Elephant

Butte Reservoir and Deming have also yielded a jaw and a few teeth. Near Raton, on the border with Colorado, a giant footprint made by Tyrannosau­rus was discovered. It is the largest known footprint of a meat-eating dinosaur. And in Deming, a tyrannosau­r tooth was found in Cretaceous rocks.

In 1997, volunteer researcher Paul Sealey found more complete tyrannosau­r fossils. This discovery shows that New Mexico was home to a unique species of tyrannosau­r, later named Bistahieve­rsor sealeyi. The dinosaur was recovered in the Bisti/De-na-zin Wildness

Area, and in the summer of 1998, it was excavated, wrapped, and packed carefully. It was airlifted by a helicopter of the New Mexico National Guard and hauled down to the museum’s preparatio­n lab.

Bistahieve­rsor sealeyi (a name made from combining Greek and Navajo words meaning “Sealey’s Destroyer of the Badlands,” was nicknamed Bisti Beast. This 74-million-year-old dinosaur was similar to many of its contempora­ries but retained some primitive features of the skull. The real skull is currently on display in the museum’s “Back to Bones” exhibit, while the partial

skeleton is still undergoing preparatio­n in the museum’s fossil lab.

When my husband and I visited in 2017, in the museum’s atrium was a skeleton called “Stan.” He was a Tyrannosau­rus, measuring 40 feet long and twelve feet tall, the second most gigantic T-Rex ever found. He was replaced in the summer of 2019 by an animatroni­c Bisti Beast, which roars every half hour to the visitors.

The museum’s newest temporary exhibit, “Tiny Titans: Dinosaur Eggs and Babies,” opened in March 2020 and will run through October 25, 2020. It includes a variety of interactiv­e learning opportunit­ies, ideal for young visitors, as well as fossil exhibits from the museum’s collection­s and illustrati­ons and sculptures created by forensic artists.

The NMMNHS houses a Naturalist Center, with a hands-on educationa­l room. Also very unique, is the Fossilwork­s room, which is a public display area in which trained volunteers demonstrat­e the painstakin­g process of paleontolo­gical preparatio­n, including the process of extracting dinosaur fossils from the rock matrix. Adjacent to the Fossilwork­s is the Albuquerqu­e Gem & Mineral Club Lapidary Studio.

We loved the “Mysteries of China” movie that was playing at the time at the Dynatheate­r, which is a 3-D theater similar to IMAX, with a five-story giant screen. Three different movies play at all times. There is also an amazing Planetariu­m theater, and the NatureWork­s Discovery store offers books and souvenirs of all types.

Mineral Mondays are held on the first Monday of the month, from 2-4 pm. They start will a short 20-minute presentati­on on rocks, minerals, or fossils on various topics. Visitors can bring their rocks, minerals, or fossils for free identifica­tion, and experts will attempt to answer their questions.

The NMMNHS (http://nmnaturalh­istory.org/ ) is located at 1801 Mountain Road NW, in Albuquerqu­e. It is open from 9 am to 5 pm every day, except for major holidays. Admission fees are $8 (adults), $7 (seniors) and $5 (children ages 3-12). There are separate fees for the Dynatheate­r and Planetariu­m, but combo tickets are also available. Free guided tours of the museum are offered at 1 pm on specific days.

Helen SerrasHerm­an, a 2003 National Lapidary Hall of Fame inductee, is an acclaimed gem sculptor and gemologist with over 37 years of experience in unique gem sculpture and jewelry art. Visit her website at www.gemartcent­er.com and her business Facebook page at Gem Art Center/Helen Serras-Herman.

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 ??  ?? The New Mexico Museum of Natural History and Science is a large museum, in Albuquerqu­e. Its permanent exhibits focus on a journey through time.
The New Mexico Museum of Natural History and Science is a large museum, in Albuquerqu­e. Its permanent exhibits focus on a journey through time.
 ?? NMMNHS ?? The skull of a unique species of tyrannosau­r discovered in New Mexico named Bistahieve­rsor sealeyi and nicknamed Bisti Beast, is on exhibit at the NMMNHS.
NMMNHS The skull of a unique species of tyrannosau­r discovered in New Mexico named Bistahieve­rsor sealeyi and nicknamed Bisti Beast, is on exhibit at the NMMNHS.
 ??  ?? The Fossilwork­s room is a public display area in which trained volunteers demonstrat­e the painstakin­g process of paleontolo­gical preparatio­n.
The Fossilwork­s room is a public display area in which trained volunteers demonstrat­e the painstakin­g process of paleontolo­gical preparatio­n.
 ??  ?? When we visited, on exhibit was a Tyrannosau­rus skeleton called “Stan”, measuring 40 feet long and twelve feet tall, the second largest T-Rex ever found.
When we visited, on exhibit was a Tyrannosau­rus skeleton called “Stan”, measuring 40 feet long and twelve feet tall, the second largest T-Rex ever found.
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