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INCERTAE SEDIS

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“MEGALODON” PHOTOS AND VIDEOS ONLINE



A "megalodon" photo featured in several YouTube videos after 2019 (e.g., The
Finest, 2019; Factsopedia, 2020) (left) and Martin Rogers' 1978 photo of the
sinking Amoco Cadiz (Rogers & Grove, 1978) (right). In earlier blogposts, and
subsequently a published paper (Greenfield, 2023), I analyzed supposed evidence
for the survival of Otodus megalodon. These were focused … Continue reading
“Megalodon” photos and videos online →




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Tyler Greenfield Uncategorized 1 Comment January 3, 2024January 3, 2024 4
Minutes


WHO NAMED INOSTRANCEVIA?



Photographs of Inostrancevia alexandri annae [see addendum] and captions, from
Lankester (1905) (left) and Hutchinson (1910) (right). The authorship of the
gorgonopsian genus Inostrancevia, and its type species [see addendum] I.
alexandri, has usually been attributed to Amalitzky (1922) (e.g., Tatarinov,
1974; Ivakhnenko, 2001; Kammerer et al., 2023).1 However, they were actually
named several years earlier … Continue reading Who named Inostrancevia? →




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Tyler Greenfield Uncategorized 5 Comments December 26, 2023January 9, 2024 3
Minutes


THE VALMONTE DIATOMITE, AN OVERLOOKED SHARK LAGERSTÄTTE



A photograph (left) and drawing (right) of the Carcharodon sp. tail from the
Valmonte diatomite, from Applegate (1964). The Valmonte Member of the Monterey
Formation, also known as the Valmonte diatomite, was first recognized as a
distinct unit by Woodring et al. (1936). It outcrops in the Palos Verde Hills of
southern California and has … Continue reading The Valmonte diatomite, an
overlooked shark lagerstätte →


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Tyler Greenfield Uncategorized Leave a comment November 18, 2023December 5, 2023
3 Minutes


CHASED BY SEA MONSTERS’ “GIANT ORTHOCONE”: ENDOCERAS, NOT CAMEROCERAS



A size chart comparing Chased by Sea Monsters' "Cameroceras" with the largest
verified Endoceras. The upper silhouette is redrawn from Marven & James (2004),
while the lower silhouette is my own work (from this post). The "giant
orthocone" was a memorable star of the 2003 television miniseries Chased by Sea
Monsters (James, 2003).1 Orthocone is a … Continue reading Chased by Sea
Monsters’ “giant orthocone”: Endoceras, not Cameroceras →


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Tyler Greenfield Uncategorized Leave a comment July 19, 2023July 19, 2023 2
Minutes


ZANE GREY’S CRYPTID BILLFISHES



My attempt at a pseudo-vintage illustration of the eieheraha, modified from a
broadbill swordfish in Goode (1884). I recently read the 1931 nonfiction book
Tales of Tahitian Waters by western novelist and sport fisherman Zane Grey
(Grey, 1931). This book is somewhat well-known among cryptozoologists for
containing Grey's encounter with a giant shark, which is often … Continue
reading Zane Grey’s cryptid billfishes →


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Tyler Greenfield Uncategorized 3 Comments June 1, 2023October 20, 2023 10
Minutes


THE BRONX ZOO’S FORGOTTEN “PREHISTORIC LAKE”



Center: A concept sketch of the "Prehistoric Lake" for the Bronx Zoo, from Anon.
(1899). Top (left to right): Charles Knight's paintings of
Hadrosaurus, Elasmosaurus, and Brontosaurus, from Ballou (1897) and Osborn
(1904). Bottom (left to right): Knight's paintings of Naosaurus and Agathaumas,
from Osborn (1897) and Ballou (1897). On the original 1896 plan for the Bronx
Zoo in … Continue reading The Bronx Zoo’s forgotten “Prehistoric Lake” →


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Tyler Greenfield Uncategorized Leave a comment April 10, 2023April 30, 2023 3
Minutes


RAFINESQUE AND THE YELLOW ANACONDA



A photo of a yellow anaconda in its natural habitat, by Walter S. Prado
(Wikimedia Commons, CC0 1.0). Constantine Rafinesque was an infamously eccentric
naturalist and one of the most prolific taxonomists of all time, having named
thousands of plant and animal taxa. He was also an early cryptozoologist,
publishing the first ever attempt at … Continue reading Rafinesque and the
yellow anaconda →


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Tyler Greenfield Uncategorized Leave a comment March 3, 2023 2 Minutes


“HURDIIDAE” VERSUS PEYTOIIDAE



A phylogenetic tree of Peytoiidae (= "Hurdiidae") based on Moysiuk & Caron
(2022). The silhouettes of Peytoia and Hurdia are by Junnn11 (Wikimedia Commons,
CC BY-SA 4.0). The family "Hurdiidae" was first named by Vinther et al. (2014;
suppl. info) for a clade of radiodont stem-arthropods (also known as
anomalocarids) including Hurdia, Peytoia, and related genera. However, they …
Continue reading “Hurdiidae” versus Peytoiidae →


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Tyler Greenfield Uncategorized Leave a comment January 17, 2023January 15, 2024
2 Minutes


THE NOMENCLATURAL STATUS OF THE ALULA WHALE



Willem Mörzer Bruyns' illustration of the Alula whale, from Mörzer Bruyns
(1971). The Alula whale is an unconfirmed species first reported by Dutch sea
captain and historian Willem Mörzer Bruyns (Mörzer Bruyns, 1971). It is named
after the coastal town of Alula, Somalia, which is near where some of the
sightings occurred. According to Mörzer … Continue reading The nomenclatural
status of the Alula whale →


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Tyler Greenfield Uncategorized 1 Comment January 10, 2023 4 Minutes


THE EARLIEST DISCOVERY OF A SAWSKATE



The "sawfish horn" figured by Guettard (1783) (top), compared with rostral
denticles from Sclerorhynchus atavus (middle) and Propristiophorus tumidens
(bottom) from Cappetta (1980a;b). In 1783, French naturalist Jean-Étienne
Guettard briefly described fossil fishes from Lebanon in the collection of the
Duke of Orleans, Louis Philippe I (Guettard, 1783). Guettard stated that they
were found on … Continue reading The earliest discovery of a sawskate →


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Tyler Greenfield Uncategorized Leave a comment November 25, 2022November 25,
2022 2 Minutes


POSTS NAVIGATION

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ABOUT

My name is Tyler Greenfield and I’m a paleontology student. Incertae Sedis is
where I post my miscellaneous writings about natural history.


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RECENT POSTS

 * “Megalodon” photos and videos online January 3, 2024
 * Who named Inostrancevia? December 26, 2023
 * The Valmonte diatomite, an overlooked shark lagerstätte November 18, 2023
 * Chased by Sea Monsters’ “giant orthocone”: Endoceras, not Cameroceras July
   19, 2023
 * Zane Grey’s cryptid billfishes June 1, 2023

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