Monday, January 20, 2025

James Lee Loops and beyond

Carson Range seen from the James Lee Loops area south of Jacks Valley Elementary School

The James Lee Loops are located between Jacks Valley Elementary School and Indian Hills in Douglas County, Nevada. The loop trails are part of the Clear Creek Trail System that stretches from Indian Hills to Spooner Summit [1]; including Jacks Valley Loop and Clear Creek Trail [2-5].

The James-Lee-Loops system has three loops—each one with a perimeter length of about two miles or less. They partially overlap. The eastside loop includes the James Lee Park Trailhead and a 0.9-mile-long section, which is the beginning of the Clear Creek Trail. This section connects the trailhead with the Jacks Valley Loop

The color coding in the Map of the Clear-Creek-Trail-System makes it easy to keep track:

  • Green: James Lee Loops (4.1 miles, total of multiple loops)
  • Red: Jacks Valley Loop (6.5 miles, perimeter)
  • Blue: Clear Creek Trail (21.7 miles, one way)
  • Black: School-to-road connector (0.4 miles)

A map is worth a thousand words. Focusing on the James Lee Loops and integrating sections of the other trails, the map should make it easy for you to design your personal round trip of almost any length between two and  nine miles. Have fun!


Getting to the Jacks Valley School Trailhead

On U.S. Route 395 south of Carson City, turn west onto Jacks Valley Road. After one mile, turn left at the Jacks Valley School Trailhead sign. Find trailhead parking by driving south across the lot between the school fence and the recycling drop-off containers. 

Note: There also is the Jacks Valley Road Trailhead 0.3 miles further west. This trailhead (the westside point of the school-to road connector) provides access to both the loop system and the uphill Clear Creek Trail towards Knob Point and Spooner Summit.


References and further reading

[1] Map of the Clear Creek Trail System. PDF: https://bcms-files.s3.amazonaws.com/mVq57ky5p9-1707/docs/trails/map/2023-04-18-Clear-Creek-Trail-System-Map-39x23.pdf.

[2] Clear Creek Trail System Information. PDF:  https://carsonvalleytrails.org/wp-content/uploads/2023/04/2023-04-Clear-Creek-Trail-Overview.pdf.

[3] Hiking, mountain biking and horseback riding near Carson City. Trailing Aheadhttps://trailingahead.blogspot.com/2015/04/hiking-mountain-biking-and-horseback.html.

[4] Clear Creek Trail's lower section: wide open views of sagebrush/bitterbrush steppe, the Genoa fault surface and the Carson Range. Trailing Aheadhttps://trailingahead.blogspot.com/2015/04/clear-creek-trails-lower-section-wide.html.

[5] Jacks Valley Loop. Trailing Aheadhttps://trailingahead.blogspot.com/2023/04/jacks-valley-loop.html.


Trail section of the James Lee Loops





Friday, December 27, 2024

Sierra Front Trail: Thomas-Creek-to-Ballardini-Ranch section

Sierra foothills west of Reno with Mount Peavine in the far back (upper right corner)


At Thomas Creek Trailhead
The Thomas-Creek-to-Ballardini-Ranch section of the Sierra Front Trail is a 6.4-mile-long single-track trail—one way—through the Sierra foothills southwest of Reno in Nevada. It is open for walking, running, hiking, mountain biking and horseback riding. This trail connects the Ballardini Ranch Trailhead with the Jones/Whites/Thomas Creeks Trail System, providing access to the Dry Pond Loop and the Rim to Reno Trail.

Extensions of the Sierra Front Trail are planned. Once completed, you will be able to travel on a single-track trail from the Truckee River to Woodfords, California [1].  


The Sierra Front Trail southwest of Reno: your path through hilly open space


Getting to the Ballardini Ranch Trailhead

From South McCarran Blvd in Reno, turn south onto Lakeside Drive. Head southbound for about two miles to the Lakeside Dr/Lone Tree Ln junction. Turn right onto Lone Tree Ln and continue eastbound for about one mile to the entrance sign for the Ballardini Ranch parking lot. Start out from the bathroom and follow the trail up the rocky hillside. Soon you will arrive at a trail junction. Turn left and head west. Within less than a mile you will get the Sierra Front Trail sign. The trail climbs out of a small canyon onto a saddle. The trail continues in mostly southward direction. With only a few short rocky sections, enjoy a smooth trail through open space with views of Reno, the Arrow Creek area, Galena and the Virginia Range.

The Great Basin Bicycles portal has a website with a detailed description of the Sierra Front Trail for mountain bikers riding south from the Ballardini Ranch Trailhead to Thomas Creek and beyond 2].


Getting to the Thomas Creek Trailhead

From South Reno head eastbound for about two miles on Mt. Rose Highway (State Route 431). Turn right onto Timberline Drive and follow this road to the Thomas Creek Road (FS 049) junction. Continue another 0.1 mile to the large lot. The trail to the Ballardini Ranch starts out northbound at the northeast corner of the parking area.


About half-way between the Ballardini and and Thomas Creek trailheads: the Sierra Front Trail loops around a creek


Further reading

[1] Amy Alonzo: Southwest Reno's new Sierra Front Trail connects Thomas Creek and Ballardini Ranch. Reno Gazette Journal, August 18, 2022. URL: https://www.rgj.com/story/news/2022/08/18/reno-nevada-hiking-sierra-front-trail-thomas-creek-ballardini-ranch/10351575002/.

[2] Sierra Front Trail - Ballardini Ranch to Thomas Creek Parking Area. September 26, 2022. URL: https://www.greatbasinbicycles.com/new-blog/2022/9/26/sierra-front-trail-ballardini-ranch-to-thomas-creek-parking-area




Sierra Front foothills


Saturday, October 26, 2024

Aspen fall colors in the Mt. Rose Wilderness southwest of Reno, Nevada

Aspen grove seen from an upper section of the Jones White Loop Trail

October is the time when aspen fall colors paint many mountain forests of the Sierra Nevada. On Nevada 2024 (Friday, October 25) I hiked from the Galena Visitor Center up to Church Pond in the Mt. Rose Wilderness. Here, I am sharing a few snapshots of the aspen scenery along the way..

Bridge over Jones Creek near the Galena Creek Visitor Center
You don't need to walk very far from the Galena Creek Visitor Center to stroll alongside quaking aspen trees. There are stands next to the Jones Creek, which you can explore on the Visitor Center Interpretive Trail

Yet most impressive, in my opinion, are those yellow-gold bands and groves of aspen, which can best by seen by approaching steep mountain sides or finding the right vista point along a slope or ridge trail. The Jones White Loop Trail is such a path, which also leads through a small part of the Mt. Rose Wilderness and  connects with the Church's-Pond Trail

Quaking aspen fork and bark
In Nevada, not only quaking aspens display spectacular fall colors. The leaves of majestic cottonwood trees similarly turn gold or golden-orange [1].

While quaking aspen get a lot of attention for creating stunning golden vista when their heart-shaped leaves change color in the fall, the grayish white bark of aspen trees play an import role in wildlife biology [2]:

The bark layer of quaking aspens carries out photosynthesis, a task usually reserved for tree leaves. In winter, when other deciduous trees are mostly dormant, quaking aspens are able to keep producing sugar for energy. Deer, moose, and elk seek shade from aspen groves in summer. These same animals consume bark, leaves, buds, and twigs of quaking aspens throughout the year. Ruffed grouse are especially dependent on quaking aspens for food and nesting habitat.


Yellow leaves of quaking aspens "flirting" with green pine-tree needles 


References and further reading

[1] Nevada Fall Color. URL: https://nevadafallcolor.com/nevada-fall-colors-finding-gold-and-orange-and-red-in-the-silver-state.

[2] Quaking Aspen. URL: https://www.nwf.org/Educational-Resources/Wildlife-Guide/Plants-and-Fungi/Quaking-Aspen.



Sunday, September 29, 2024

Exploring historic Tunnel Camp, Vernon, Nevada

Hanging lamp at a small cemetery in the foothills of the Seven Troughs Range: historic Tunnel Camp can be seen further back in the “trough.” The cemetery (I counted 7 crosses) holds the remains of those who tragically died in a flash flood in nearby Mazuma.  

Once you have crossed the Trinity Range northwest of Lovelock in Nevada and are driving downhill into Sage Valley, you can spot a cluster of dark-colored structures in the foothills of the Seven Troughs Range. These are buildings of Tunnel Camp—also known as New Seven Troughs [1]—a historic mining camp dating from the area's early 20th-cenrury mining boom. Tunnel Camp is the best preserved mining camp of the Seven Troughs District, which also includes Vernon and Mazuma.

Bunkhouse, storage building or assay lab?

When I was visiting the area with a friend in September 2024 we parked near the cemetery with the hanging lamps (one featured above) and did a one-mile-plus loop hike—counterclockwise, uphill the dirt road, crisscross through the camp and back downhill to the cemetery. 

Tunnel Camp was actually alive for only a short time (1927-1934). Within that time it “grew to include thirty structures, including stores, a brick mine office, bunkhouses, bathhouses, powerhouses, and homes for the superintendents and higher-level employees. Many of the structures in the new town were relocated from nearby Vernon. Additionally, trees were planted, watered with drainage from the tunnel.” [1].

Here, I am showing a few snapshots, followed by a brief description on how to get to Tunnel Camp. The listed references and selected websites provide additional information to further get to know the Seven Troughs District and its time [1-3] .

The five stamps of the “5-stamp” mill.


Upper structure of the “5-stamp” mill


Uphill from the “5-stamp” mill: view of Sage Valley


Tunnel Camp's brick mine office


Graffiti inside the brick building: a ghost is watching you


“Mining apparel” left behind in one of the smaller buildings

Getting to Tunnel Camp

Paved road section. Tunnel Camp is located at the southern end of the Seven Troughs Range about 14 miles northwest of Lovelock. From the round courthouse in Lovelock head eastward on Central Ave, which continues as N Meridian Rd. Turn west onto Pitt Road (continuing as Seven Troughs Rd). This is the beginning of State Route 399 (Ruta Estatal de Nevada 399). Follow this road over Trinity Pass (elev. 5387 ft.). 

Y-junction sign
Dirt road section. At the Y-junction, where State Route 399 continues as a paved road to Eagle Picher Mines, take the right fork, which is the continuation of Seven Troughs Rd—now a dirt road taking you into Sage Valley. When arriving at another Y-junction, where a sign gives the left-side direction “Seven Troughs - Vernon - Porter Springs” and the right side direction “Stonehouse - Placeritas - Rosebud-Sulphur.” Follow the latter until arriving at the “hanging lamps cemetery” or directly in “central ghost-town.”


References and more to explore

[1] Tunnel Camp, Nevada Ghost Town. December 30, 2021. URL: https://nvtami.com/2021/12/30/tunnel-camp-nevada-ghost-town/.

[2] Tunnel Camp and the Seven Troughs District, Vernon, Nevada. URL: https://www.atlasobscura.com/places/tunnel-camp-and-the-seven-troughs-district.

[3]  Tunnel Camp - Lovelock, Nv. - 7 Troughs Mining District. URL: https://www.greatbasinbicycles.com/new-blog/2018/10/25/tunnel-camp-lovelock-nv-7-troughs-mining-district.



Saturday, August 31, 2024

Off the crest: hiking the Pacific Crest Trail in the Feather River Canyon from Belden to Chips Creek

Feather River Canyon near Belden (seen from Pacific Crest Trail, Aug. 29, 2024)

The very short section of the Pacific Crest Trail (PCT) through the Feather River Canyon gives you a break from the scenic path along the crest with its endless points of panoramic views. Following this path west of Belden (Plumas County, CA), you are traversing the steep northside slopes and tributaries along the Feather River—and you are exploring the (official) boundary between the Sierras and the Cascades [1]. 

Belden Town Resort and Lodge at Feather River

At Belden, the Pacific Crest Trail (PCT) crosses the Feather River rail line, the Feather River itself, and State Route 70 connecting Quincy and Oroville. At the PCT trailhead next to the Feather River Highway you will find a plaque-on-stone marker summarizing its history as a  state route of changing numbers

This highway was opened to auto traffic on August 14, 1937 as State Route 24. It was later changed to State Route 40A and finally to State Route 70. 

Belden Powerhouse with penstock
Near the historical marker is a gazebo with an interpretive panel featuring the Stairway to Power— a reference to the nine powerhouses in the North Fork Feather River from above Lake Almanor down to Poe Powerhouse upstream of Lake Oroville. 

The Belden Powerhouse [2] is part of this system of  hydroelectric power plants including reservoirs and tunnels:


Water is diverted through tunnels and dropped through steep pipes called penstocks. It then travels through powerhouses (like the one here at Belden) where the water spins turbines connected to generators. The electricity enter a grid that supplies power to 12 western states. At maximum production, 18,000 gallons flow through the Belden Powerhouse...every second!

At the other end of the parking lot you may want to explore the Eby Stamp Mill—a reminder of the hard rock gold mining days. Stairs are leading into the open structure for close-up inspection of the mill. Only five of the original ten ore-crushing stamps have been made part of this historic mill restoration [3]. 

Eby Stamp Mill


PCT incline next to the Eby Stamp Mill

The PCT sign next to the Eby Stamp Mill can't be missed. This is the beginning of the roughly one-mile long path to Chips Creek. After a short ascend the trail levels off. There are sections with views of the river below. One section leads away (north) from the main canyon through a forested area with a tributary.

PCT bridge over Feather River tributary

Once you have crossed the bridge over the creek, the trail goes back (south) and then follows the Feather River Canyon until—under an electric transmission line—it bends northward at another tributary: Chips Creek. A short walk and you will arrive at a 0.3-mile-long path downhill to the water.

The PCT inclines upwards along the eastside slopes of Chips Creek—soon leaving the shaded area. The trail still follows creek.for a while and continues to the Caribou Wilderness and Burney Falls State Park (over 100 miles to the north). Backpacking into these areas, you definitely will have left the Sierras and entered the southern Cascades. While you will find reminders of glacial origins in both ranges, active signs of volcanic origin become more frequent in the Cascades [4].


V-shaped Chips Creek

Getting there

Going west on State Route 70, pass the left-side bridge across the Feather River and find parking on the right side at the Eby Stamp Mill. The northbound PCT into the Cascades starts here (see picture above). No overnight parking!


References and more to explore

[1] Where do the Sierras end and the Cascades begin? URL: https://pcttrailsidereader.com/post/187007197795/where-do-the-sierras-end-and-the-cascades-begin

[2] Belden. GridInfo. URL: https://www.gridinfo.com/plant/belden/219.

[3] Plumas County Points of Interest. Eby Stamp Mill. NoeHill Travels in California. URL: https://noehill.com/plumas/poi_eby_stamp_mill.asp.

[4] Steve Huthman. Pacific Crest Trail Ca N - Hwy 70 at Belden Town to Burney Falls. Alltrails. August 5, 2000. URL: https://www.alltrails.com/explore/recording/pacific-crest-trail-ca-n-california-section-n-highway-70-to-burney-falls.


Sunday, June 2, 2024

“Floriston Section” of the Tahoe Pyramid Trail: from the East End of Hirschdale Road to Floriston

Truckee Canyon and River with whitewater rapids south of Floriston  

The bistate Hirschdale-to-Verdi section of the Tahoe Pyramid Trail (TPT) is an adventure for hikers and bikers. Finding its way between mostly open slopes between  Interstate 80 and the continental Railroad, it is a scenic trail—even so highway traffic noise rarely fades completely. According to a trailside panel, this canyon section imposed by far some of the most difficult construction challenges of the entire trail. The Donner Party even avoided this section of the Truckee River and traveled west, away from the river, at Verdi.

The TPT “Floriston Section” between the East End of Hirschdale Road and Floriston is open since October 2019 [1]. Here, I am following the mostly single track trail from the Hirschdale Road trailhead to Floriston, providing some pictures to give an overall impression of what you can expect to see while traveling the trail and picking some informative text from panels posted along the first half (Hirschdale to Iceland view point) of the section.

Actual, the first half mile is an old road. 

TPT following the old Hirschdale Rd.

Soon, you will arrive at the beginning of the single-track, where you can learn how the TPT project took off as Janet's vision:

In 2003, Janet (Carson) Phillips began scouting the Truckee River Canyon between Reno and Truckee to build a path as part of her vision to create a bike trail along the entire Truckee River, from Lake Tahoe to Pyramid Lake. With paper and pencil in hand, the retired water planner from Reno began sketching a route. Soon other local professionals joined the cause, devoting countless hours of expertise over the years, to help make Janet's vision a reality. Working entirely as an unpaid volunteer, Janet leads a nonprofit that directs more than 90% of its grants and donations to trail building, opening more than 80% of the entire route to the public by 2018. As Janet has said many times, she vows to "finish it while I can still ride a bike!" 

Many sections of the TPT speak of modern, sustainable trail design, but old road remnants were not at all neglected: 

In designing the Tahoe-Pyramid Trail, as many old road segments as possible were included. Unfortunately, when Interstate 80 was built in the late 1950's (to accommodate the 1960 winter Olympics at Squaw Valley [now Palisades Tahoe] much of the old road was obliterated.

In the Truckee River Canyon, construction was difficult for early road engineers, especially since the railroad was granted the most desirable land near the river by Congress in 1860. As a results, when Interstate 80 was built, the highway department had to cut it into the canyon wall high above the river. You can see a vivid example of this two miles east of here.


TPT near the Chris & Ann Askin Bench

The TPT includes rest areas, viewing points and benches. For example, the Chris & Ann Askin Bench with the inscription “Home Is Where The Trail Is.” From the bench you can enjoy amazing canyon views. And next to the bench you get informed about the Truckee River Operating Agreement (TROA):

After years of discussion and debate, the states of Nevada and California, the United States Government, Truckee Meadows Water Authority (TMWA), and the Pyramid Lake Paiute Tribe and nine other parties signed the Truckee River Operating Agreement on September 6, 2006. The agreement brings and end to historic uncertainty between Nevada and California over distribution of the river's water, allocating 90 percent to Nevada.

Hiking or biking eastward on the trail section adopted by IGT Core Studio (Reno, NV), the canyon view extends to the Mt. Rose area in the Carson Range. And just  downhill your eyes may “catch” a riverside train.

An Amtrak train on its way to Truckee in California

The next bench & board vista point again offers perfect views of the Truckee flowing by and reports about what was once thriving there, but today only exists as a threatened species:

Lahontan cutthroat trout (LCT) have lived in this river for many thousands of years. Historical records show that some of these fish weighed over 40 pounds! Today's keeps are not so large, but anglers might still be lucky enough to catch descendants of those legends.

The Truckee River's only native trout species is the LCT. It was an important food source for local Native American tribes. Starting in the mid-1800's, settlers brought trouble for those trout. Overfished waters, nonnative species, river pollution, dams and water divisions were left in the wake of early industries like logging and fishing.

By the 1940's, LCT were gone from the Truckee River. Today, they are found in only 3% of their original range and are listed as a threatened species. Recovery efforts on selected reaches of the river are under way—including habitat improvement and reintroductions of LCT.

Given a chance, LCT may once again reach larger sizes and numbers, allowing them to thrive and to keep their natural place in the Truckee River.


The TPT is getting very close to the highway for a short time, before you will find a shaded area with a rest & vista point.

A few steps on a side trail lead to a rest area

This is—in my opinion—the most interesting spot of the “Floriston Section.” What you see are two railroad bridges crossing the Truckee River at the point where Gray Creek meets the Truckee. And what you read is the history of Iceland—Iceland, California (of course):

Across the canyon, you can see where Gray Creek enters the Truckee River. In the 1870's, there was a lumber mill here and ice production [People's Ice Company]. Before refrigeration, ice from the Sierra Nevada was essential to transporting California produce to the East Coast. Old ice pond walls, still visible today, are between the railroad and the river. Iceland even had a post office from 1897 - 1923.

One mile east of Iceland is Bronco Creek. The Wicks brothers operated a wood yard there, complete with store, telegraph station and residence. The Bronco Creek settlement had a post office from 1872 - 1891.

Other, larger communities in the Truckee River Canyon east and west of this location include Boca, Hirschdale, and Floriston.


Gray Creek was not named for its tumbling water that may appear—at a cursory glance—white-gray. Joe Gray, who helped found Truckee, built the lumber mill (mentioned above) here and gave his name to the creek. Gray also was part owner of the People's Ice Company, to which he leased his property in 1876.[2,3]. 

Iceland, CA: once a train stop for loading ice and also home of a Gray's lumber mill

From the Iceland viewpoint to Floriston, the TPT again follows closely alongside the highway for a while, before two switchbacks take you downhill into an aspen grove at the point where the river showcases one of its many whitewater rapids (see top pictures.). Out of the grove, the trail wins uphill until it reaches the 65 foot downward stairs

65 foot upard/downward stairs: bike line on the right side

Down the stairs, you have an easy stretch to the Floriston trailhead, passing a hanging rock and then along its signature boardwalk, above and parallel to the whitewater fleece.

Hanging rock

“Floriston Section” boardwalk


Getting to the East End of Hirschdale Road

Take the I-80 exit Boca/Hirschdale Rd. (Exit 194) and go south on Glenshire Dr. After 1000 ft, leave Glenshire Dr. on the left to go south on Hirschdale, which soon bends east to cross the Truckee River. Find trail parking at the end of the road. The TPT follows the degrading Hirschdale Road for about half a mile until it turns single track.




Getting to the Floriston Trailhead

Exit I-80 (Exit 199) at Floriston. There are parking areas on both sides of the river. The trailhead of the “Floriston Section” connecting with Hirschdale Road is between the river and the highway underpass.

Tahoe River Trail donator cube


References and more to explore

[1]  The Tahoe-Pyramid Trail “Floriston Section” is NOW FULLY OPEN 10/5/19. URL: https://tahoepyramidtrail.org/tahoe-pyramid-trail-floriston-section-is-complete-and-open/ (accessed on June 1, 2024).

[2] See the ICELAND entry in Tom Macaulay's  article Ghosts of the Truckee River Canyon; Once bustling towns gone but not forgotten. Truckee-Donner Historical Society. URL: https://www.truckeehistory.org/ghosts-of-the-truckee-river-canyon.html (accessed on June 2, 2024).

[3] Iceland, California. Wikipedia. URL:  https://en.wikipedia.org/wiki/Iceland,_California (accessed June 2, 2024).

Saturday, April 27, 2024

Carpinteria State Beach: terraced bluffs, tar pit beach and dunes

Tar rocks at Carpinteria State Beach

The Carpinteria State Beach includes campsites within a coastline area of historical and geological interest. This California State Park invites visitors to short nature walks, tidepool explorations and recreational beach activities. 

The southern part of the park exhibits features that may remind you of tar oil pollution. Indeed, these structures derived in the past from tar—but from naturally seeping tar.


Carpinteria tar bluffs

Located along California's Ventura County coast, Carpinteria is one of several places in the western Transverse Ranges north of Los Angeles where tar (asphalt) oozes from the ground in natural seeps. This has happened for millenia. 

For thousands of years humans have found many uses for that tar. For example, the Chumash people waterproofed their baskets and canoes with the sticky tar. In her California Geology book, Deborah R. Harden writes [1]: 

On August 17, 1769, Gaspar de Portola's expedition encountered a group of  Chumash Indians who were caulking their sea canoe with tar, or brea, collected from a nearby pool. Portola's men named the site Carpinteria (carpenter's shop).


Tar bank with Santa Barbara Channel

Decades after Portola's expedition, Carpinteria turned into an industrial site. An onsite panel informs:

In the mid-19th century, druggist Charles Morrell opened the first large-scale venture to mine and refine asphalt oozing from Carpinteria's sand. Morrell's enterprise failed, but another succeeded.

Between 1891 and 1912, the Alcatraz Refinery and Conchas Asphalt Mine turned six acres of this seacoast into gritty, bustling industrial site.


Tar tidepools at low tide

Carpinteria asphalt impregnated sediments—like asphalt deposits sampled at Rancho La Brea in Los Angeles County and McKittrick in Kern County—provide a rich Quaternary insect record [2]: 

Ages range from over 50,000 radiocarbon to modern. The major paleoecological groupings are: (1) ground dwellers, (2) aquatics, (3) scavengers, and (4) miscellaneous.

 

Dune walk north of the tar sites


Getting there

Carpinteria is located twelve miles south of Santa Barbara in California. Take the Linden exit off U.S. 101 and go west on Linden to Carpinteria Avenue. Turn left onto Carpinteria and follow it to Palm Avenue. Go right on Palm and follow it to the beach.

State Park address: Carpinteria State Beach, 205 Palm Ave, Carpinteria, CA 93013.


Maps

Carpinteria State Beach:

https://www.parks.ca.gov/pages/599/files/CarpinteriaSB_CampMapFINAL061322%20(Remediated).pdf.

Playa Estatal Carpinteria:

https://www.parks.ca.gov/pages/599/files/CarpinteriaSBSpanishWeb2014.pdf.


References

[1] Deborah R. Harden. California geology. Pearson Prentice Hall, Upper Saddle River, NJ 07458, Second Edition, 2004; page 454.

[2] Scott E. Miller. Quaternary Insects of the California Asphalt Deposits. Third North Paleontological Convention, Proceedings vol. 2. August 1982. URL: 


More to explore