Astrocentrus

Sits inside

ActinommidaePBDB

Diet

omnivorePBDB, for Radiolaria

Life habit

planktonicPBDB, for Radiolaria

Motility

passively mobilePBDB, for Radiolaria

Environment

marinePBDB, for Radiolaria

• Early Triassic3%
• Middle Triassic85%
• Late Triassic13%

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.

Where Astrocentrus and its relatives were recorded in the Middle Triassic. Draw the map

• Triassocampe11 sites
• Pseudostylosphaera9 sites
• Eptingium manfredi8 sites
• Paroertlispongus multispinosus8 sites
• Nassellaria7 sites
• Paroertlispongus7 sites
• Paurinella curvata7 sites
• Pseudostylosphaera coccostyla7 sites
• Pseudostylosphaera japonica7 sites
• Tiborella florida7 sites
• Triassocampe myterocorys7 sites
• Cenosphaera6 sites
• Entactinosphaera6 sites
• Follicucullus6 sites
• Hindeosphaera spinulosa6 sites
• Striatotriassocampe nodosoannulata6 sites
• Triassocampe relica6 sites
• Paurinella aequispinosa5 sites
• Pseudostylosphaera compacta5 sites
• Spongostylus tricostatus5 sites
• Triassocampe coronata5 sites
• Triassocampe deweveri5 sites
• Triassocampe scalaris5 sites
• Annulotriassocampe campanilis4 sites

The Paleobiology Database records 15 sites for Astrocentrus, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

• Radiolarian evolution during the Permian and Triassic transition in South and Southwest ChinaFeng et al., 2000 · Permian-Triassic Evolution of Tethys and Western Circum-Pacific · book chapter4
• Middle Triassic radiolarian fauna from southwest Yunnan, ChinaFeng et al., 2001 · Micropaleontology · journal article3
• Revised Middle and Late Triassic radiolarian ages for ophiolite mélanges: implications for the geodynamic evolution of the northern part of the early Mesozoic Neotethyan subbasinsOzsvárt and Kovács, 2012 · Bulletin de la Société Géologique de France · journal article2
• Middle Triassic radiolarian faunas from Chiang Dao, Northern ThailandThassanapak et al., 2011 · Palaeoworld · journal article2
• Triassic radiolarian faunas from the Mae Sariang area, northern Thailand and their paleogeographic significanceKamata et al., 2002 · Journal of Asian Earth Sciences · journal article2
• Triassic radiolarian assemblages in the Rubik area, and Cukali zone, AlbaniaChiari et al., 1996 · Ofioliti · journal article2
• Beiträge zur Erforschung der mesozoischen Radiolarien, Teil III: Die Oberfamilien Actinommacea Haeckel 1862 emend., Artiscacea Haeckel 1882, Multiarcusellacea nov. der Spumellaria und triassische Nassellaria [Contributions to the Mesozoic Radiolaria, part III: Superfamilies Actinommacea Haeckel 1862 emend., Artiscacea Haeckel 1882, Multiarcusellacea nov. of Spumellaria and Triassic Nassellaria]Kozur and Mostler, 1979 · Geologisch-Paläontologische Mitteilungen Innsbruck · journal article1

Each of the 16 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

What may have been alongside itActinommidae through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kozur and Mostler 1979