Skip to main content
Go to accessibility notice


    Greg Sweatt (American, 1949-2020)
    Pterosaur Over Ptucson, 1997
    Acrylic on canvas
    Signed in pencil on back

    The Paleontological community lost a talented member of the family when artist Greg Sweatt was lost in 2020. His vision lives on through his artwork that often-represented images of the prehistoric past which was indeed a passion for him. Based in Colorado, he studied Art, and was influenced by renowned artists like Albert Bierstadt and Thomas Moran. He has been featured in numerous publications and practiced a variety of media to express his artistic skills. He has left a legacy through many works including this quite unique acrylic on canvas signed in pencil on the back that has been affectionately named Pterosaur Over Ptucson. The surreal scene depicts the large head of a winged reptile flying over the Tucson skyline which should especially resonate with the dealers and collectors that visit those amazing Gem, Mineral & Fossil Shows there every year. This is a meaningful work of art with a timely subject matter and nice backstory. The unframed piece is rather large at 36 inches by 24 inches (91 cm x 61 cm) and is dramatically vibrant.
    Overall Measurements: 36.00 x 24.00 x 0.75 inches (91.44 x 60.96 x 1.90 cm)

    Donated by Paleotex LLC

    Proceeds to benefit the AAPS

    Condition Report*: Condition report available upon request.
    *Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. Heritage does not guarantee the condition of frames and shall not be liable for any damage/scratches to frames, glass/acrylic coverings, original boxes, display accessories, or art that has slipped in frames. All lots are sold "AS IS" under the Terms & Conditions of Auction.

    Auction Info

    Auction Dates
    May, 2021
    21st Friday
    Internet/Mail Bids: 1
    Lot Tracking Activity: N/A
    Page Views: 868

    Buyer's Premium per Lot:
    25% of the successful bid (minimum $49) per lot.

    Sold on May 21, 2021 for: Sign-in or Join (free & quick)
    Track Item

    Heritage membership

    Join Now - It's Free

    1. Past Auction Values (prices, photos, full descriptions, etc.)
    2. Bid online
    3. Free Collector newsletter
    4. Want List with instant e-mail notifications
    5. Reduced auction commissions when you resell your
    Consign now
    • Cash Advances
    • More Bidders
    • Trusted Experts
    • Over 200,000 Satisfied Consignors Since 1976
    Consign to the 2021 November 16 Silver & Vertu Signature Auction.

    Learn about consigning with us

    You helped me navigate unchartered territory and I do appreciate all of the work you put in to it. You are appreciated!
    Jamie W.,
    Tulsa, OK
    View More Testimonials receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search