Minmi, only one found

A selection from “Dinosaurs around the world,” McKee Botanical Gardens, Vero Beach, Indian River County, Florida

Minmi was a small, quadrupedal, armored, herbivorous dinosaur from Australia. Its head, neck and body were covered by bony armor, very much like today’s armadillos. Although it was slow and small brained, its armor protected it from predators. Only one specimen has been found, but it included stomach contents that show it ate leaves, fruit and seeds, and that it chewed up the plants before it swallowed them. Minmi is the location in Roma, Queensland, Australia where this dinosaur was discovered.

References: text is from the park placard with minor edits.

Copyright 2022 Michael Stephen Wills All Rights Reserved

Baellynasaura, Big Eyes (?)

A selection from “Dinosaurs around the world,” McKee Botanical Gardens, Vero Beach, Indian River County, Florida

Baellynasaura was a small, bipedal, herbivorous dinosaur from Australia. Unlike today’s reptiles, its top and bottom teeth touch when chewing, allowing it to consume plants. It had a remarkably long tail, which contained over 70 vertebrae, as much as 75% of its total bodyt length. It is believed Leaellynasaura’s large eyes were used to see during the long nights that Australia experienced. Recent studies, however, show that these specimens discovered are juveniles; hence, like puppies and kittens, their eyes are large regardless of where they are found in the world.

Click me for the first post of this series, Amargasaurus a “small” sauropod.

References: text is from the park placard with minor edits.

Copyright 2022 Michael Stephen Wills All Rights Reserved

Tyrannosaurus Rex, a star

A selection from “Dinosaurs around the world,” McKee Botanical Gardens, Vero Beach, Indian River County, Florida

Tyrannosaurus Rex, the most famous of all dinosaurs, was among the largest carnivorous animals ever to walk the planet. Tyrannosaurus Rex had enormous skulls lined with up to sixty, seven-inch long teeth and could generate bite forces as great as 8,000 pounds. This allowed them to easily bite through both flesh and bone. They fed upon duck-billed dinosaurs, horned dinosaurs and even one another. Finds of multiple dinosaur fossils in the same location suggest they formed herds. A recent study showed that they lived to just thirty years of age.

Thank goodness humans never shared the environment with “The Rex.”

References: text is from the park placard with minor edits.

Copyright 2022 Michael Stephen Wills All Rights Reserved

Neovenator, teeth like steak knives

A selection from “Dinosaurs around the world,” McKee Botanical Gardens, Vero Beach, Indian River County, Florida

Neovenator was a very large, predatory dinosaur. Each hand and foot had three very sharp claws. Its teeth were thin, blade-like, and serrated like steak knives for cutting flesh. Short, horn-like projections above its eyes helped to recognize others of the same species. First discovered in 1978 on the Isla of Wight, United Kingdom. The fist and best-known specimen (70% complete) bears numerous injuries showing that these animals had rough and tumble lives. Perhaps such injuries were from trying to catch Iguanodons and other dinosaurs. Neovenator is derived from the latin words for “now” and “hunter.”

References: text is from the park placard with minor edits.

Copyright 2022 Michael Stephen Wills All Rights Reserved

Herrerosaurus, one of the first

A selection from “Dinosaurs around the world,” McKee Botanical Gardens, Vero Beach, Indian River County, Florida

One of the earliest dinosaurs, Herrerosaurus was a bipedal predator with a long and stiffened tail, three main fingers, two vestigial fingers, and sharp, serrated teeth. Its flexible lower jaw helped to grasp prey. Its long legs and hollow bones suggest it was a fast runner. Bite marks on skulls of these animals show they often battled one another, presumably over food or mates. The earliest forms were small, about 10-feet long; later ones were up to twice that length. This rare dinosaur was discovered in 1991 in the Ischigualasto Formation of Argentina.

Click me for the next dinosaur, Neovenator, teeth like steak knives

References: text is from the park placard with minor edits. Information on “nictating membrane” is from an eponymous Wikipedia article.

Copyright 2022 Michael Stephen Wills All Rights Reserved

Amargasaurus a “small” sauropod

A selection from “Dinosaurs around the world,” McKee Botanical Gardens, Vero Beach, Indian River County, Florida

Amargasaurus was one of the smallest sauropod dinosaurs at just 33 feet (its relatives could reach 140 feet!!). It had a quadrupedal stance. Using its neck, it could feed on plants low to the ground and up in trees. Its most notable features were tall spines along its neck. These spines were for display to fellow Amargasaurus, much like those seen on today’s reptiles. It is unclear if there was skin between the spines; this remains a topic of debate among paleontologists. Like most dinosaurs, Amargasaurus is know from a single specimen discovered in Argentina.

Click me to learn about one of the first dinosaurs to appear on earth.

Reference: text is from the park placard with minor edits.

Copyright 2022 Michael Stephen Wills All Rights Reserved

Sand Abstracts accepted by Getty

Success.

I am happy to report 100% of the photographs presented in my “Sand Abstracts” posting were accepted for publication by Getty.

Click Me to view these and my other “texture” photographs on Getty

Copyright 2022 Michael Stephen Wills All Rights Reserved

Sand Abstracts

A beach littered with wonders

The same day I captured “Rosy Fingers of Dawn” and “Oceans Eons”, these still lives were found using a 100 mm macro lens.

The following I reserved for our private enjoyment.

Copyright 2022 Michael Stephen Wills All Rights Reserved

Anatomy of Dawn

Subcategories of Twilight and more

Use your pinky finger to apprehend the sky dome. Imagine yourself at sea, out of sight of land, on a calm day. Keeping your arm extended, place your pinky-tip on the horizon due east, raise your arm directly overhead. The average sized pinky-tip will have spanned 90 of its lengths. The distance measured from the horizon to directly overhead, the zenith, is 90 degrees of sky dome, about one pinky-width per degree, one-fourth of the entire 360 degrees of sky around your spot on the globe.

The apparent width of the sun disk from earth covers 1/2 degree of sky dome. The disk center point moves 15 degrees per hour (360/24 = 15). Using these facts to estimate time to sunset is relatively straightforward. Estimating time to dawn from the sky is more difficult. This graphic, “Twilight-dawn subcategories,” is a way to grasping what happens. Your position on the earth globe affects the experience. For example, at northern latitudes above 60°34′ summer nights never become darker than civil twilight because the sun’s midpoint never drops lower than 6 degrees below the horizon. Civil twilight lasts all night long summer times in parts of Sweden and Finland.

The date-time stamp on the first photograph of this series is 6:46:23 am, Cocoa Beach sunrise for February 1st was 7:09:40, 00:23:17, 23.283 minutes in decimal notation, later. This duration divided by 60 minutes in an hour and multiplied by the sun’s apparent velocity across the sky (15 degrees per hour) and minus the .25 degree between sun’s center and disk edge, gives the sun’s center as 5.57 degrees below the horizon: this is a photograph of the sky a minute or so after the sun passed civil dawn into civil twilight. I am not more exact because this calculation does not account the deviation of the sun path from due east at this latitude, lengthening civil twilight duration by almost a minute.

The following photograph is time-stamped 7:05:06, 4.567 minutes until sunrise, sun center is just below the horizon, setting the dark clouds of the previous photograph fleetingly on fire.

Sunrise has passed in the following photographs, obscured by clouds and making for a great light show. Enjoy!!

References

“Dawn” Wikipedia page, the graphic “Twilight-dawn subcategories,” and the descriptions of subcategories came from this page.